The Power of Three (TV story): Difference between revisions

Latest revision as of 11:19, 4 September 2024

The Power of Three

Key crew

Writer:

Chris Chibnall

Director:

Douglas Mackinnon

Producer:

Marcus Wilson

Release details

Story number:

229

Premiere broadcast:

22 September 2012

Premiere network:

BBC One

Format:

1x45 minute episode

Official trailer

Memorable moment

Another memorable moment

One more memorable moment

Behind the scenes video

More behind the scenes stuff

*Doctor Who* television stories
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A Town Called Mercy	The Angels Take Manhattan

Production order
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The Angels Take Manhattan	Hide

The Power of Three was the fourth episode of series 7 of Doctor Who.

It featured the reappearances of Brian Williams and UNIT. Kate Stewart, daughter of the Brigadier, made her first appearance in a piece of BBC-produced television, and would go on to become a major supporting character for many years. The episode also marked Amy and Rory's return as full time companions.

Unusually, life with the Doctor is seen from the companions' point of view, although this is because Amy and Rory are "part-timers". A similar situation occurred in The Sarah Jane Adventures, where the Doctor popped up in two stories as a guest character, while Sarah Jane was living her life.

Synopsis[[edit] | [edit source]]

There have been many ways to invade the Earth, and the Eleventh Doctor has seen them all – or so he always thought. And then the human race wakes up one morning and discovers the world has been overrun by small cubes, which then proceed to do nothing at all. A plan is afoot, humanity is endangered – but by what and how and, above all, when? Thus begins the Year of the Slow Invasion.

For the first time in his world-saving career, the Doctor has to call upon one of the least of his virtues: patience. And the Ponds face something possibly more terrifying than any world-ending apocalypse: the Doctor is moving in!

Plot[[edit] | [edit source]]

In July, Amy and Rory return home after a trip with the Eleventh Doctor. They have been gone long enough that much of the food in their refrigerator has spoiled, their dirty laundry is pungent, and 59 messages accumulated in their answering machine. They promptly begin taking care of these problems. Lounging outside with some tea, Rory realises that they have two lives: life with the Doctor and their everyday life. Amy wonders what they should do, to which Rory says that they have to choose. However, the sound of the TARDIS arriving interrupts them; "But, not right now." they both agree.

Life with the Doctor is mad, wonderful and exciting because there's always something interesting around the corner even if, occasionally, this new discovery then tries killing you; everyday life on Earth is rather, well, dull, predictable and uninteresting. Every time that Amy and Rory go away with the Doctor, they become a part of his life; however, he has never stuck around long enough to become a part of theirs; until now.

As Amy and Rory sleep, a mysterious black cube materialises in their room. They're awoken the next morning by Rory's father, Brian, who gets them to notice that many black cubes are filling the streets. Amy and Rory are shocked. They go outside and find the Doctor examining a cube in the park right across the street; "Invasion of the small cubes. Got to admit, didn't see that one coming."

Several news reports show that the cubes are all over the world, and every specialist in the unusual and alien is trying to figure out what the cubes are. Regardless, people have started taking them home, despite the fact they could be dangerous; governments have been collecting them as well, hoping to put the cubes through tests to determine what they are and if they pose a threat. Some speculate that this could be the most clever marketing campaign ever.

In the meantime, the Doctor and his family examine the cubes in the TARDIS, which he has moved into Amy and Rory's home. Brian makes several possible guesses as to what the cubes could be, such as spaceships, bombs, hard drives and pieces of a puzzle. Impressed, the Doctor congratulates Brian on being very thorough with his theories. Instructing Brian to watch the cubes for any activity, the Doctor takes some equipment from the TARDIS, planning to turn the Ponds' kitchen into a makeshift lab.

Rory goes to dress for work, surprising the Doctor; Amy reminds him his scrubs are in the lounge. Amy asks what he thinks they're doing when not travelling with him; the Doctor retorts, "mostly kissing, I guess". Setting up his equipment, the Doctor learns Amy now writes for a travel magazine, having given up her modelling job, and that Rory works part-time at a hospital. Amy explains that she can't settle on a job as she's always waiting for him to show up; she then adds that including present day years and the time in the TARDIS, she guesses they have travelled for over a decade.

As they continue talking, a UNIT strike team breaks into the house, bringing a trouser-less Rory into the kitchen with them. Amy jokes about being envious of Rory's situation. A woman named Kate Stewart walks in and apologises for the rudeness of the UNIT soldiers; "all this muscle and they still don't know how to knock." She uses a device to X-ray the Doctor and confirms his identity; from UNIT's reports, the Doctor has two hearts and a strange dress sense. Kate goes on to explain that a spike in artron energy tipped them off to his presence. They need the Doctor's expertise to deal with alien threats they haven't dealt with. She continues, saying that they've tried destroying the cubes by several means; the cubes survived plus and minus 200 Celsius, simulated five miles of water depth, being dropped out of a helicopter at 10,000 feet, and being rolled over by their best tank. The Doctor decides that the best thing to do is observe the cubes.

After UNIT departs, the Doctor watches the cubes with Amy and Rory, but quickly becomes bored; four days and nothing has happened. Needing to be constantly busy or risk the loss of his sanity, the Doctor performs several different tasks; he paints the Ponds' fence, practices with a football, and vacuums their house. Seeing that it only took him an hour to do these things, the Doctor prepares to go off and have a few adventures to restore his sanity. He finds Brian still inside the TARDIS, watching the cubes; the Doctor points out it's been four days. Brian laughs, saying that time flies when you're alone with your thoughts. The Doctor hands him the cubes, telling him, Amy and Rory to continue monitoring them; if they need him, they know his phone number. Amy is not sure he should leave, so the Doctor reassures her by explaining that he will program the TARDIS to monitor all news channels from this day onward; if anything changes with the cubes, he will be updated immediately and return to deal with it.

As time goes on, Amy and Rory live their normal lives, taking on commitments. In October, Amy promises to be a bridesmaid at her friend Laura's future wedding, while Rory agrees to work full time at the hospital. Both tell each other what they did, finding it a bit odd as they're so used to travelling with the Doctor. In the meantime, Brian has been keeping a log; he watches a cube when he's awake and records it when he's asleep. Rory mocks him for near-religiously following the Doctor's orders, but Brian remains adamant and continues his log. At this time, the cubes have become part of everyday life, being used for multiple different tasks.

During December, Rory deals with a patient who has his foot stuck in a toilet again, while a small girl appears to be possessed by her cube. An old man is in his room, waiting to be given his medication and discharged as an orderly enters, asking if he needs anything. He says no as a second enters; the old man asks this orderly to have the other leave. Despite his protests that he doesn't need help, the orderlies try subduing him. In the middle of his struggle, he removes one of their masks, revealing their inhuman nature. As the old man screams, the little girl (who had also entered the room) looks on with an expressionless face.

During the Ponds' anniversary, 26 June Amy phones the Doctor, wondering where he is; she's left several messages. He arrives with a bouquet just as she finishes her call, telling her to collect Rory as he has a present for them. He takes Amy and Rory with him to the Savoy Hotel's opening night in 1890 as his anniversary gift to them. However, despite his promise that nothing would go wrong, they ended up having to stop Zygons, who had replaced half the staff, from trying to remove their spaceship from underneath the hotel. They continued to go on several trips, during which Amy accidentally married Henry VIII.

Eventually, the Doctor takes them back home to finish their anniversary with friends and family. Brian, noticing that Amy and Rory are wearing different clothes from before they left with the Doctor, asks him how long they've been gone. Explaining that it's been seven weeks, the Doctor is asked what happened to all his previous companions. With a look of regret, the Doctor explains that most of them have left willingly or he purposely left them behind, and very few have died. However, he promises to Brian that he will do everything he can to make sure Amy and Rory don't die while travelling with him. Admitting to Amy that he misses them, the Doctor asks if he can stay with her and Rory.

During July, exactly one year after the cubes appeared, Brian prepares to take a nap while his camera records for him; the cube spins slightly after he closes his eyes. Noticing this, he tricks it into thinking he's asleep, catching it spinning. At the Ponds' house, Rory sees a cube open on the side opposite of him. He tries to see what's inside of it, only to have the device toy with him and open on sides he can't see. Amy sees one glow and touches it, only for it to prick her hand with needles and take her pulse. Playing a tennis game on the Ponds' Wii, the Doctor sees a cube float in front of the screen; he dismisses it at first but realises the severity of what's happening. He threatens that if the ones who created it wish to harm humanity, he will defend them to his last breath; it fires a laser, forcing him to flee into the hall.

Brian arrives just as everyone meets and talks over each about what their cubes are doing. The Doctor looks back to see that his cube surfed the web and that there are news reports saying that some of the cubes have caused injuries all around the world. Rory is called in to assist with those injured in the area; Brian goes with him to offer any assistance he can. The Doctor discovers a message on his psychic paper, telling him to go to the Tower of London, which houses one of UNIT's bases. Kate explains that several of the cubes captured by them each display only one unique function; some harmful ones are spewing fire or causing mood swings, while the harmless ones do things such as playing the "Chicken Dance" in an endless loop. The Doctor sets a computer to look for the source of the signal activating the cubes.

Noticing that Kate is beginning to panic, the Doctor tells her not to despair as her dad didn't. Kate is left shocked as to how the Doctor figured out her identity; she's the daughter of his old friend, the Brigadier. He questions her as to why she dropped "Lethbridge" from her name, learning she did so to not get any favours from those in UNIT who knew the Brig. Kate explains that her dad taught her everything he could and that, in the words of his old friend, "Science leads", explaining why she took the position of Head of Scientific Research. The Doctor smiles; his old friend taught his daughter the most valuable lesson from their time working together. Suddenly, the cubes become inactive after 47 minutes. The Doctor is left confused and goes outside, complaining about the lack of ventilation underground bases have.

At the hospital, Rory sends Brian to retrieve some medical supplies he needs to treat patients. Not knowing where the supplies are, Brian asks the two "orderlies" for some help. However, they ignore him. Brian continues to ask for help, seemingly annoying them as they turn around with sedatives in hand. Brian is left shocked.

Outside the Tower, the Doctor and Amy debate the merit of travelling the way they do; Amy considers it "running away" and the Doctor considers it "running to"; he travels to see whatever the universe holds before it's gone forever. During their conversation, the Doctor realises the cubes acted out to gain attention and scan the entire planet. The power at UNIT goes out, and the cubes start a countdown from seven. The Doctor locks himself in a room with a cube, ready to confront what's inside. At zero, the cubes open but contain nothing; the Doctor is perplexed. Moments pass when around the world, people start going into cardiac arrest, with the Doctor in pain with one of his hearts failing. The program he set earlier to find the source of the cubes comes up on the screen, revealing seven different sources; the nearest being the hospital where Rory works. He and Amy leave for the hospital.

At the hospital, Rory is searching for Brian. Seeing him being wheeled into an out-of-order lift by the false orderlies, Rory follows only to find it empty. Touching the back wall in the lift, Rory finds it houses a portal. It takes him to an alien ship, which houses patients that have been kidnapped over the entire year. The two orderlies close in on him with sedatives.

The Doctor and Amy arrive at the hospital, looking for both Rory and Brian along with the source of the cubes' signal. The Doctor discovers the little girl with the active cube and reveals her to be a simple android overseeing the entire operation. The Doctor shuts her down with the sonic screwdriver, but collapses in pain as one heart is not enough to keep him alive. Amy quickly grabs a defibrillator and, despite his protests, manages to restart the Doctor's other heart. The Doctor dances with joy, thanking Amy; however, he then orders her to "never do that again." They abandon the deactivated android girl, dead in the hallway, and continue looking for the energy source.

Tracing the signal, they discover the same out-of-order lift and use the portal inside it to reach the alien ship. The Doctor explains that the ship exists outside of the universe, and they travelled through a wormhole. They find Rory unconscious and quickly wake him. The Doctor disables the orderlies while ordering Amy and Rory to return everyone that was kidnapped through the portal. The Doctor examines the monitors, discovering that seven ships are using seven portals to reach earth. A humanoid appears on the other side of the monitors.

Amy and Rory return, confused by the sight of him. The Doctor explains it's one of the Shakri, who are told of in Gallifreyan legends as, in the Doctor's words, the "pest controllers of the universe". The Shakri consider humanity to be a plague that must not spread, hence why they've chosen to start killing them; the blackouts were caused by the cubes sucking up electricity to exterminate one-third of humanity. The Doctor says that humans have done more good than harm, and he is willing to defend them regardless of what the Shakri believe.

With a smug smile, the humanoid announces another wave of cubes will be soon be unleashed on Earth, before vanishing. Amy is left confused as to what happened. The Doctor explains it was simply a hologram produced by the ship; similar to a "talking propaganda poster". Fiddling with the controls, the Doctor takes control of the cubes already on Earth; he manages to reverse the damage done by the cubes, restarting the hearts of everyone killed by the Shakri. However, as a downside, this task has created a backlash of energy that will blow up the ship. The Doctor, Amy and Rory flee to the portal, barely managing to get back to the hospital in time.

The Doctor and the Ponds set off again.

After having dinner with Amy, Rory and Brian, the Doctor prepares to take off for solo adventures again. However, Brian encourages Amy and Rory to return to being the Doctor's full-time companions; travelling with the Doctor gives them the chance to save the world and make it better. The Doctor agrees, even offering Brian a place in the TARDIS. However, Brian turns down the offer, saying that someone has to stay behind and water the plants. The Doctor and the Ponds board the TARDIS and shut the door.

Amy narrates, saying, "So that was the year of the slow invasion when the Earth got cubed, and the Doctor came to stay. It was also when we realised something the Shakri never understood. What cubed actually means. The power of three."

Cast[[edit] | [edit source]]

Uncredited cast[[edit] | [edit source]]

Brian Cox - Himself^[1]
Lord Sugar - Himself^[1]
Inez Solomon-Gardner - Outlier droid^[2]

Crew[[edit] | [edit source]]

Executive Producers Steven Moffat and Caroline Skinner


Written by Chris Chibnall	Produced by Marcus Wilson	Directed by Douglas Mackinnon	Director of Photography Gavin Struthers	Production Designer Michael Pickwoad	Visual Effects The Mill Space Digital

Make-up Designer Barbara Southcott	Casting Director Andy Pryor CDG	Music Murray Gold	Costume Designer Howard Burden	Edited by Mike Hopkins	Special Effects Real SFX
Original theme music by Ron Grainer • With thanks to the BBC National Orchestra of Wales • Conducted and orchestrated by Ben Foster • Recorded by Gerry O Riordan • Mixed by Jake Jackson

General production staff

Script department

Assistant Script Editor - John Phillips

Camera and lighting department

Art department

Costume department

Make-up and prosthetics

Movement

Stunt Co-ordinator - Crispin Layfield

Casting

Casting Associate - Alice Purser

General post-production staff

Special and visual effects

Sound


Not every person who worked on this adventure was credited. The absence of a credit for a position doesn't necessarily mean the job wasn't required. The information above is based solely on observations of the actual end credits of the episodes as broadcast, and does not relay information from IMDB or other sources.

Uncredited crew[[edit] | [edit source]]

Space Digital[[edit] | [edit source]]

VFX Supervisor - Matt Wood^[3]

Worldbuilding[[edit] | [edit source]]

The Doctor mentions milliseconds.

Communications technology[[edit] | [edit source]]

Kate mentions iPads, Flickr, YouTube and Twitter. The mention of Twitter particularly evokes great annoyance in the Eleventh Doctor.

Technology[[edit] | [edit source]]

The Doctor uses several different magnifying glasses to examine the cubes.
Kate uses a handheld scanner to examine the Doctor's double hearts.

Culture[[edit] | [edit source]]

The Doctor mentions an Achilles heel.

Energy and radiation[[edit] | [edit source]]

Kate traces artron energy levels to find the Doctor and then identifies him due to his fashion sense and binary vascular system.

Foods and beverages[[edit] | [edit source]]

The Doctor states that he invented the Yorkshire pudding.
The Doctor, Amy and Rory eat fish custard.

Game consoles[[edit] | [edit source]]

Though no gameplay footage is shown, sound effects indicate that the Doctor plays the "tennis" mode in Wii Sports on the Nintendo Wii.

Individuals[[edit] | [edit source]]

Amy accidentally marries Henry VIII.
While playing virtual tennis, the Doctor mentions the tennis player Fred Perry and a pair of shorts he had borrowed from him.
The real physicist Brian Cox plays himself as he is interviewed on the news for an opinion about the cubes.

Music[[edit] | [edit source]]

The song "Merry Xmas Everybody" by the rock band Slade is briefly heard in the hospital.
One of the cubes plays the "Chicken Dance" song on an endless loop.
The song "Titanium" plays at the party Amy attends.
"Don't Falter" by Mint Royale plays during the garden party.

Popular culture[[edit] | [edit source]]

The Eleventh Doctor remarks, "Through the looking-glass, Amelia?" when he and Amy are about to pass through the secret portal to the Shakri ship. This is a reference to the events of the novel Through the Looking-Glass, and What Alice Found There, where the titular character enters the looking-glass world through a looking-glass.

Species[[edit] | [edit source]]

There were Zygon duplicates at the Savoy when Amy, the Doctor and Rory visit, and the Doctor claims there is a Zygon spaceship beneath the hotel.

Substances[[edit] | [edit source]]

The Doctor revives Rory with Saborian smelling salts.

Influences[[edit] | [edit source]]

Chris Chibnall's brief from Steven Moffat was to "live with the Doctor — The Man Who Came to Dinner, Doctor Who style."
The plot of the episode is similar to, if not the same as, a game called Surviving Mars. Even Brian's line: "What if they're bombs, billions of tiny bombs? Or transport capsules maybe with a mini robot inside? Or deadly hard drives? Or alien eggs? Or messages needing decoding? Or they're all part of a bigger whole, jigsaw puzzles that need fitting together?" can be found in this game.

Story notes[[edit] | [edit source]]

The unique logo for The Power of Three.

For this episode, the Doctor Who logo's texture resembles the Shakri cubes featured prominently in the episode. Also, the shade of red in the time vortex appears to be more crimson, rather than orange, with the lightning strikes causing an additional effect of electrical surges spreading out from the tips of the bolts. The vortex also turns purple with the sharpness seriously decreasing when the title appears.
The working title for this episode was Cubed.^[4]
The character of Kate was introduced in the 1995 made-for-video independent production HOMEVID: Downtime.
Though not made clear in the episode, the scene in Henry VIII's bedroom was intended to show the TARDIS trio returning to get Rory's mobile phone charger after Rory had left it behind before TV: A Town Called Mercy ^[+]Loading...["A Town Called Mercy (TV story)"]. (TCH 71)
Chris Chibnall is the first non-showrunning writer in the revived series to write multiple stories within the same season, having previously written TV: Dinosaurs on a Spaceship ^[+]Loading...["Dinosaurs on a Spaceship (TV story)"]. He would later become the showrunner in 2018.
This is the last appearance of the Eleventh Doctor's blue bow tie, which he wears along with his more commonly worn red one to reflect the length of time passed in this story.
Chris Chibnall was inspired by the story of the MSC Napoli, a 2007 shipwreck along the Devon coast near his home, when people showed up in droves to claim cargo which had washed up on the shore. This led to the notion of the general public collecting alien items which initially appeared to be innocuous, but which would ultimately be revealed to have a more sinister purpose.
Matt Smith put disgust into the Doctor's remark concerning Twitter in the episode, reflecting his real-life decision to stay off the social network.
One major element of Chris Chibnall's early drafts which was eventually dropped involved the appearance of Prime Minister Stephen Carter. Suspicious of the Doctor, Carter would bar him from the United Kingdom, resulting in the Doctor's absence from a long stretch of the narrative.
Brian was initially uneasy when Amy and Rory decided to take “one more trip” in the TARDIS. Steven Moffat suggested that Brian should instead encourage his son and daughter-in-law to go with the Doctor, providing a less sombre and more subtle lead-in to their departure in The Angels Take Manhattan ^[+]Loading...["The Angels Take Manhattan (TV story)"].
The episode comprised Block Three of season seven.
Matt Smith enjoyed working with Jemma Redgrave, describing her as "graceful, funny and charming and an absolute delight".
There was a deleted side-adventure where Amy and Rory defused a bomb which threatened an alien convoy. Okezie Morro and Henry Luxemburg were cast as bomb disposal experts Conroy and Sullivan.
This was the last episode to filmed at Upper Boat Studios. The series then transferred to Roath Lock Studios.
Chris Chibnal described the episode as as "a lovely big Earth invasion story" but different from the ones done before, as it focused on Amy and Rory's time with the Doctor and the impact of him on their lives. He stated it is told more from Amy and Rory's point of view than ever before, and is about celebrating them before they leave.
The episode originally began with scenes such as the adventure with Henry VIII and Amy at the engagement party. These were re-scheduled to introduce the invasion storyline earlier.
There was originally an extended action sequence where Rory took down the two orderlies who captured him.
The climax was originally very different. The Shakri was physically present, rather than merely appearing as a hologram. He was defeated when Amy and Rory attacked him with the syringes they had retrieved from the orderlies, and the Doctor used his sonic screwdriver on the Shakri's devastating ocular weaponry. However, it was felt that this part of the narrative detracted from the focus on Amy and Rory's life together, and so Chris Chibnall prepared new material to replace it. As a result, new material in the Ponds' house was shot.
Chris Chibnall was keen to revive Russell T Davies' tradition of celebrity cameos. He initially suggested the judges of either Britain's Got Talent or The Voice before settling on The Apprentice.
Douglas Mackinnon made a cameo as Craig, the hapless contestant on The Apprentice.
This was the last episode that Karen Gillan and Arthur Darvill filmed. Their last scene filmed together was getting into the TARDIS with the Doctor after saying farewell to Brian; when the doors closed they hugged Matt Smith and started crying.
Marcus Wilson stated that a "hundred" individual cube props were made, with "many more" added with CGI.
The Doctor and Amy's conversation outside the Tower of London could not be filmed at the genuine location due to the London Olympics, so it was shot on studio in Cardiff and the live action footage of them was composited with other footage of London, using visual effects to create the illusion.
Before being taken by android orderlies himself, Arnold Underwood was to make reference to a neighbour named Elizabeth Cracknell who had not returned home from the hospital.
Douglas Mackinnon had previously directed Steven Berkoff in The Flying Scotsman. He told Starburst that "The experience of working with him on Doctor Who was something that'll never be repeated; you could ask anyone on the cast or crew and they'll agree that his participation was extraordinary."
Kate's look of incredulous joy when the Doctor mentions her father was heavily influenced by Jemma Redgrave's own love and admiration for her late father, Corin, who had passed away only a couple of years prior to filming.
Steven Berkoff filmed his part in three days. Despite playing the main villain, he only has eight lines of dialogue.
This was Peter Cartwright's final television role. He passed away shortly afterwards.
Originally, the abductee who led Rory to the Shakri ship was a patient named Anne.
Chris Chibnall drew upon his childhood love of the Jon Pertwee era, which led to the inclusion of UNIT and Kate Stewart as a tribute to the Brigadier.

Ratings[[edit] | [edit source]]

The episode was first broadcast in the United Kingdom on BBC One and BBC One HD on 22 September 2012. Overnight ratings showed that it was watched by an audience of 5.49 million live. The final consolidated rating rose to 7.67 million viewers, making it the thirteenth most-watched programme of the week on British television, and the fifth highest rated on BBC One.^[5] The episode also received 1.3 million requests on BBC iPlayer, placing it fourth for the month on the site behind the first three episodes of the series. It also received an Appreciation Index of 87, considered "excellent".

Filming locations[[edit] | [edit source]]

Belle Vue Park, Albert Road, Penarth.
The satellite view depicting Rory's hospital and its environs was over the BBC's sprawling complex at White City, Hammersmith. The view is rotated 90 degrees, such that west is at the top of the screen. The building highlighted as the hospital is BBC Centre House.

Production errors[[edit] | [edit source]]

If you'd like to talk about narrative problems with this story — like plot holes and things that seem to contradict other stories — please go to this episode's discontinuity discussion.

After Kate Lethbridge-Stewart enters Amy and Rory's house, we see her take out her scanner. When she originally takes it out, her screen is facing the Doctor, and in the next shot, it is facing away from him.
In some shots when the cubes are counting down from 7, some cubes are missing the numbers in one shot and then have them in the next. This can be seen at 28:01 when the Doctor is in the room with the cube, and when the nurse is removing the cubes from the hospital at around 25:44.
When Amy lifts her legs to allow the Doctor to vacuum the floor beneath her feet, Karen Gillan's audio recorder can be seen in the back pocket of her jeans.

Continuity[[edit] | [edit source]]

In the first scene, Amy cleans out the fridge while Rory listens to their 59 phone messages. One message is a reminder from an optician who informs that "your reading glasses are ready for collection". In the next episode, Amy is wearing readers, which the Doctor first borrows and eventually keeps; they appear in several later episodes.
Rory's father Brian reappears. (TV: Dinosaurs on a Spaceship ^[+]Loading...["Dinosaurs on a Spaceship (TV story)"])
Brian's theory that the cubes may be capsules containing minirobots is unwittingly reminiscent of a plan later implemented by Lady Cassandra on Platform One. (TV: The End of the World ^[+]Loading...["The End of the World (TV story)"])
The Eleventh Doctor, Amy and Rory have fish custard. (TV: The Eleventh Hour ^[+]Loading...["The Eleventh Hour (TV story)"])
Kate Stewart is the daughter of Brigadier Alistair Gordon Lethbridge-Stewart. (HOMEVID: Downtime, Dæmos Rising, PROSE: The Scales of Injustice)
The Doctor, talking to a flying cube, says, "Is that all you can do? Hover? I had a metal dog that could do that", referring to K9. (TV: The Invisible Enemy et al.)
The Doctor once again has one of his hearts stop beating and asks how humans cope with just one heart. (TV: The Shakespeare Code ^[+]Loading...["The Shakespeare Code (TV story)"])
The UNIT base beneath the Tower of London is visited. It was previously seen in The Christmas Invasion ^[+]Loading...["The Christmas Invasion (TV story)"] and mentioned The Sontaran Stratagem ^[+]Loading...["The Sontaran Stratagem (TV story)"].
A voice interface was last seen in Let's Kill Hitler ^[+]Loading...["Let's Kill Hitler (TV story)"].
Rory kisses the Doctor on the cheek. The Doctor previously kissed Rory on the mouth in a moment of excitement. (TV: Dinosaurs on a Spaceship ^[+]Loading...["Dinosaurs on a Spaceship (TV story)"])
The Doctor unintentionally reveals his hiding place to Henry VIII by sneezing. In a previous adventure, whilst hiding from another king, Charles II, he gave away his location by sneezing. (TV: The Impossible Astronaut ^[+]Loading...["The Impossible Astronaut (TV story)"])
Whilst hiding from Henry VIII, the Doctor is holding a mobile phone charger. Rory had left the charger in Henry VIII's en suite. (TV: A Town Called Mercy ^[+]Loading...["A Town Called Mercy (TV story)"])
The Doctor mentions that he's run restaurants before. (PROSE: The Crystal Bucephalus)
The Doctor tells Brian that companions have left him, (TV: The Chase, et al.) been left behind, (TV: The Dalek Invasion of Earth, et al.) and a very few have died. (TV: The Daleks' Master Plan, Earthshock, AUDIO: To the Death)
A defibrillator has been used on the Doctor before. (TV: Doctor Who ^[+]Loading...["Doctor Who (TV story)"])
Although he hates it, the Doctor gives a salute to Kate, like the Tenth Doctor did when he was reunited with the Brigadier. (COMIC: The Warkeeper's Crown)
The Doctor fearing that the Ponds will fade out of his life and Brian's wishes to get them back home safely, foreshadows the following story The Angels Take Manhattan ^[+]Loading...["The Angels Take Manhattan (TV story)"].
The segment of the story taking place in June specifically takes place on 26 June, as Amy says in her voicemail to the Doctor that it's her and Rory's wedding anniversary. (TV: The Big Bang ^[+]Loading...["The Big Bang (TV story)"])
The Doctor has previously shown a boredom of experiencing time pass normally in TV: Vincent and the Doctor ^[+]Loading...["Vincent and the Doctor (TV story)"].
The Doctor again voices a disdain for Twitter. (TV: The Girl Who Waited ^[+]Loading...["The Girl Who Waited (TV story)"])

Home video releases[[edit] | [edit source]]

Series 7, part 1 DVD cover.

DVD & Blu-ray releases[[edit] | [edit source]]

The Power of Three, along with the rest of the first half of the series (episodes one through to five) was released as Series 7 Part One on DVD and Blu-ray in region 1/A on 13 November 2012, in region 2/B on 29 October 2012 and in region 4/B on 14 November 2012.
The short documentary A Writer's Tale focused on the making of this story.
Also, this episode was released as part of the Complete Seventh Series boxset on DVD and Blu-ray in region 1/A on 24 September 2013, in region 2/B on 28 October 2013 and in region 4/B on 30 October 2013.

Digital releases[[edit] | [edit source]]

In the United Kingdom, this story is available on BBC iPlayer.

External links[[edit] | [edit source]]

Footnotes[[edit] | [edit source]]

↑ ^1.0 ^1.1 The Doctor Who Team (22 September 2012). Lord Sugar and Brian Cox: Who Knew?. BBC - Blogs - Doctor Who. Retrieved on 22 September 2012.
↑ https://www.starnow.co.uk/inezsolomongardner
↑ Failes, Ian (22 May 2013). Doctor Who: Stargate’s adventures in time. fxguide. Retrieved on 20 November 2018.
↑ sfx (July 2 2012). Doctor Who Series 7: New Episode 4 Reshoot Pics. SFX. Retrieved on 23rd September 2012.
↑ Doctor Who Ratings - UK final

[bbc_sugar_cox-1] 1.0 ^1.1 The Doctor Who Team (22 September 2012). Lord Sugar and Brian Cox: Who Knew?. BBC - Blogs - Doctor Who. Retrieved on 22 September 2012.

[2] ttps://www.starnow.co.uk/inezsolomongardner

[Stargate-3] Failes, Ian (22 May 2013). Doctor Who: Stargate’s adventures in time. fxguide. Retrieved on 20 November 2018.

[4] sfx (July 2 2012). Doctor Who Series 7: New Episode 4 Reshoot Pics. SFX. Retrieved on 23rd September 2012.

[5] Doctor Who Ratings - UK final

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 {{title dab away}}
 {{real world}}
-{{Infobox Story
+{{ImageLinkTV}}
-|name            ={{StoryTitle}}
+{{Infobox Story SMW
 |image           = Cube.jpeg
 |series          = [[Doctor Who television stories|''Doctor Who'' television stories]]
-|season number   = [[Series 7 (Doctor Who)|7]]
+|season number   = Series 7 (Doctor Who 2005)
-|story number    = 228
+|series episode number = 4
-|doctor          = [[Eleventh Doctor]]
+|story number    = 229
+|scripturl       = https://www.bbc.co.uk/writers/documents/doctor-who-7-ep-4-post-production-tx-script-master.pdf
+|doctor          = Eleventh Doctor
 |companions      = [[Amy Pond|Amy]], [[Rory Williams|Rory]]
-|featuring       = [[Brian Williams (Dinosaurs on a Spaceship)|Brian]], [[Kate Stewart|Kate]]
+|featuring       = Brian Williams (Dinosaurs on a Spaceship)
-|enemy           = The [[Shakri]]
+|featuring2      = Kate Stewart
-|setting         = [[England]], [[21st century]]<!--The episode in no way gives us a firm date.  Please do not add supposition like 2020, as there's nothing in the episode which firmly supports that.-->
+|featuring3      = Brian Cox{{!}}Cox
-|writer          = [[Chris Chibnall]]
+|enemy           = [[Shakri (The Power of Three)|Shakri interface system]]
+|setting         = [[London]], [[the Year of the Slow Invasion]]<!--The episode in no way gives us a firm date.  Please do not add supposition like 2020, as there's nothing in the episode which firmly supports that.-->
+|writer          = Chris Chibnall
 |director        = [[Douglas Mackinnon]]
 |producer        = [[Marcus Wilson]]
-|broadcast date  = [[22 September]] [[2012]]
+|broadcast date  = 22 September 2012
-|format          = 45 minutes
+|network         = BBC One
-|production code =
+|format          = 1x45 minute episode
 |prev            = A Town Called Mercy (TV story)
-|next            =
+|next            = The Angels Take Manhattan (TV story)
-|made prev       =
+|made prev       = The Angels Take Manhattan (TV story)
-|made next       =
+|made next       = Hide (TV story)
-}}'''''{{StoryTitle}}''''' was the fourth episode of the [[series 7 (Doctor Who)|seventh series]] of ''[[Doctor Who]]'' produced by [[BBC Wales]].
+|trailer         = Doctor Who 'The Power of Three' TV Trailer - Series 7 2012 Episode 4 - BBC One
+|clip            = Life with the Doctor was like this... - Doctor Who 'The Power of Three' teaser - Series 7 - BBC
+|clip2           = The Doctor Kills Some Time - Doctor Who - The Power of Three - BBC
+|clip3           = In the TARDIS - Doctor Who 'The Power of Three' teaser - Series 7 2012 Episode 4 - BBC One
+|bts             = Doctor Who 'The Power of Three' - Behind the Scenes - Series 7 2012 Episode 4 - BBC One
+|bts2            = DOCTOR WHO Inside Look The Power of Three (BBC AMERICA EXCLUSIVE)
+}}
+'''''The Power of Three''''' was the fourth episode of [[Series 7 (Doctor Who 2005)|series 7]] of ''[[Doctor Who]]''.
+It featured the reappearances of [[Brian Williams (Dinosaurs on a Spaceship)|Brian Williams]] and [[UNIT]]. [[Kate Stewart]], daughter of [[Alistair Gordon Lethbridge-Stewart|the Brigadier]], made her first appearance in a piece of [[BBC]]-produced television, and would go on to become a major supporting character for many years. The episode also marked [[Amy Pond|Amy]] and [[Rory Williams|Rory]]'s return as full time [[companion]]s.
+Unusually, life with the Doctor is seen from the companions' point of view, although this is because Amy and Rory are "part-timers". A similar situation occurred in ''[[The Sarah Jane Adventures]]'', where the Doctor popped up in two stories as a guest character, while Sarah Jane was living her life.
 == Synopsis ==
-There have been many ways to invade the Earth, and the Doctor has seen them all – or so he always thought. And then the human race wakes up one morning and discovers the world has been overrun by… "very small cubes", which then proceed to… do nothing at all. A plan is afoot, humanity is endangered – but by what and how and, above all, when?
+There have been many ways to invade the [[Earth]], and the [[Eleventh Doctor]] has seen them all – or so he always thought. And then the human race wakes up one morning and discovers the world has been overrun by small [[Shakri cube|cubes]], which then proceed to do nothing at all. A plan is afoot, [[human]]ity is endangered – but by what and how and, above all, when? Thus begins [[the Year of the Slow Invasion]].
-For the first time in his world-saving career the Doctor has to call upon one of the least of his virtues: patience. And the Ponds face something possibly more terrifying than any world-ending apocalypse: the Doctor is moving in!
+For the first time in his world-saving career, the Doctor has to call upon one of the least of his virtues: patience. And the Ponds face something possibly more terrifying than any world-ending apocalypse: the Doctor is moving in!
 == Plot ==
-The episode begins with the shot of Earth from ''[[The Pandorica Opens (TV story)|The Pandorica Opens]]'', only played in reverse. Amy narrates, saying what life with the Doctor is like; several clips of her adventures with him are shown in rapid succession. She then compares it to normal life; she and Rory life normal, uninteresting lives. They eventualy talk about the two lives they have, thinking they have to choose one of them. However, the sound of the TARDIS materializing causes them to put off the descion for later. More clips are shown as Amy says that every time they go away, they become apart of the Doctor's life. However, he has never stuck around long enough to be part of theirs. That is, until the Year of the Slow Invasion. With the narrating done, a strange cube materializes on their dresser.
+In [[July]], [[Amy Pond|Amy]] and [[Rory Williams|Rory]] return [[Amy Pond and Rory Williams' house (The God Complex)|home]] after a trip with the [[Eleventh Doctor]]. They have been gone long enough that much of the food in their refrigerator has spoiled, their dirty laundry is [[pungent]], and 59 messages accumulated in their answering machine. They promptly begin taking care of these problems. Lounging outside with some tea, Rory realises that they have two lives: life with the Doctor and their everyday life. Amy wonders what they should do, to which Rory says that they have to choose. However, the sound of the TARDIS arriving interrupts them; "But, not right now." they both agree.
+Life with the Doctor is mad, wonderful and exciting because there's always something interesting around the corner even if, occasionally, this new discovery then tries killing you; everyday life on [[Earth]] is rather, well, dull, predictable and uninteresting. Every time that Amy and Rory go away with the Doctor, they become a part of his life; however, he has never stuck around long enough to become a part of ''theirs''; until now.
+As Amy and Rory sleep, a mysterious black cube materialises in their room. They're awoken the next morning by Rory's father, [[Brian Williams (Dinosaurs on a Spaceship)|Brian]], who gets them to notice that many black cubes are filling the streets. Amy and Rory are shocked. They go outside and find the Doctor examining a cube in the park right across the street; "Invasion of the small cubes. Got to admit, didn't see that one coming."
-Brian Williams presses the doorbell to Amy and Rory's home repeatedly while holding another strange black cube in his hand. Amy and Rory look out of the window, sleepy, and wonder why he is waking them up so early (it's 6 A.M.). Brian directs them to look around the streets; the cubes litter ever road within eyesight. They go outside, and Amy catches sight of the Doctor examining one of the cubes. The Doctor parks the TARDIS in the Ponds' living room and collects a couple cubes for obeservation. He asks his companions/family what they think the cubes could be, being given multiple, higly possible, explanations from Brian. Instructing Brian to watch the cubes in the TARDIS, the Doctor takes some equipment out with him and the Ponds. The Doctor explains that he is going to use their kitchen as a make-shift lab to conduct experiments while Rory leaves to get ready for work. The Doctor wonders what Amy has been up to, learning that she writes travel catalouges now.
+Several news reports show that the cubes are all over the world, and every specialist in the unusual and alien is trying to figure out what the cubes are. Regardless, people have started taking them home, despite the fact they could be dangerous; governments have been collecting them as well, hoping to put the cubes through tests to determine what they are and if they pose a threat. Some speculate that this could be the most clever marketing campaign ever.
-Setting up an experiment, the Doctor tells Amy that he is going to boil the cubes and see how they respond. At that very moment, soldiers break in and hold them at gunpoint; Rory, missing his trousers, is walked to the Doctor and Amy, much to his embaressment. A woman named [[Kate Stewart]] enters and apologises for the rudeness of the soldiers; she examines the Doctor visualy and with a small device, confirming his identity. Kate explains that she is now UNIT's Head of Scientific Reseach, having reorientated UNIT (as she said "kicking and screaming") into a science-based organization. She tracked artron energy to the Ponds' home in hopes of finding the Doctor. She goes onto explain that the cubes are all over Earth and have been subjected to every kind of destructive experiment they could think of; listing some of them. The Doctor decides that since they can't be destroyed, it's best to watch the cubes instead.
+In the meantime, the Doctor and his family examine the cubes in [[the Doctor's TARDIS|the TARDIS]], which he has moved into Amy and Rory's home. Brian makes several possible guesses as to what the cubes could be, such as spaceships, bombs, hard drives and pieces of a puzzle. Impressed, the Doctor congratulates Brian on being very thorough with his theories. Instructing Brian to watch the cubes for any activity, the Doctor takes some equipment from the TARDIS, planning to turn the Ponds' kitchen into a makeshift lab.
-The Doctor, Amy and Rory watch the cubes as the Doctor snarls in annoyance; he needs to be constantly busy as "patience is for wimps". Amy tells him to be busy then. The Doctor does several things for about an hour; painting their fence, rewiring the electrics, and praticing football. Seeing that he needs to have an adventure or two to "restore sanity", the Doctor prepares to leave, just noticing Brian is still in the TARDIS. He tells them that the TARDIS will be synched to the Earth broadcast programs from this day onward to keep him informed.
+Rory goes to dress for work, surprising the Doctor; Amy reminds him his scrubs are in the lounge. Amy asks what he thinks they're doing when not travelling with him; the Doctor retorts, "mostly kissing, I guess". Setting up his equipment, the Doctor learns Amy now writes for a travel magazine, having given up her modelling job, and that Rory works part-time at a hospital. Amy explains that she can't settle on a job as she's always waiting for him to show up; she then adds that including present day years and the time in the TARDIS, she guesses they have travelled for over a decade.
-May:
+As they continue talking, a [[UNIT]] strike team breaks into the house, bringing a trouser-less Rory into the kitchen with them. Amy jokes about being envious of Rory's situation. A woman named [[Kate Stewart]] walks in and apologises for the rudeness of the UNIT soldiers; "all this muscle and they still don't know how to knock." She uses a device to [[X-ray]] the Doctor and confirms his identity; from UNIT's reports, the Doctor has [[Binary vascular system|two hearts]] and a strange dress sense. Kate goes on to explain that a spike in [[artron energy]] tipped them off to his presence. They need the Doctor's expertise to deal with alien threats they haven't dealt with. She continues, saying that they've tried destroying the cubes by several means; the cubes survived plus and minus 200 Celsius, simulated five [[mile]]s of water depth, being dropped out of a [[helicopter]] at 10,000 [[Foot (unit)|feet]], and being rolled over by their best [[tank]]. The Doctor decides that the best thing to do is observe the cubes.
-Brian continues doing as the Doctor ordered him to do: watching the cubes for any sign of activity. He keeps a video log of the days he's been at it, watching footage the camera takes while he's sleeping to make sure he didn't miss anything. Rory is slightly amused by the fact his father keeps on doing this "project"; he is later asked at the hospital to be there full-time while Amy is asked to be a bride's maid months in advance. Infroming each other of this, they both wonder what to do as thier lives on Earth are becoming more important.
+After UNIT departs, the Doctor watches the cubes with Amy and Rory, but quickly becomes bored; four days and ''nothing'' has happened. Needing to be constantly busy or risk the loss of his sanity, the Doctor performs several different tasks; he paints the Ponds' fence, practices with a [[football]], and vacuums their house. Seeing that it only took him an hour to do these things, the Doctor prepares to go off and have a few adventures to restore his sanity. He finds Brian still inside the TARDIS, watching the cubes; the Doctor points out it's been four days. Brian laughs, saying that time flies when you're alone with your thoughts. The Doctor hands him the cubes, telling him, Amy and Rory to continue monitoring them; if they need him, they know his phone number. Amy is not sure he should leave, so the Doctor reassures her by explaining that he will program the TARDIS to monitor all news channels from this day onward; if anything changes with the cubes, he will be updated immediately and return to deal with it.
-June:
+As time goes on, Amy and Rory live their normal lives, taking on commitments. In [[October]], Amy promises to be a bridesmaid at her friend [[Laura (The Power of Three)|Laura]]'s future [[wedding]], while Rory agrees to work full time at the hospital. Both tell each other what they did, finding it a bit odd as they're so used to travelling with the Doctor. In the meantime, Brian has been keeping a log; he watches a cube when he's awake and records it when he's asleep. Rory mocks him for near-[[religious]]ly following the Doctor's orders, but Brian remains adamant and continues his log. At this time, the cubes have become part of everyday life, being used for multiple different tasks.
-It's Amy and Rory's anniversay. Amy calls the Doctor, telling him that she's left several messages to remind him. The Doctor pops up behind her with a bouquet, telling her that he got the messages. He then tells Amy to grab Rory and follow him into the TARDIS. He drops them off at a hotel's grand opening, but the plan backfires when it turns out half the staff were [[Zygon]]s in diguise. He next takes them to the time of [[Henry VIII]], where Amy accidently marries him, much to Rory's annoyance. The Doctor manages to return them to the evening of their anniversary seven weeks after they orriginaly left. Brian can tell because of their different clothes; he asks the Doctor what happened to the companions before Amy and Rory. The Doctor explains that some leave on their own or he leaves them behind, and very, very rarely they die ([[Dodo Chaplet]] and [[Adric]] fall under the third category).
+During [[December]], Rory deals with a patient who has his foot stuck in a toilet again, while a [[Outlier droid|small girl]] appears to be possessed by her cube. An old man is in his room, waiting to be given his medication and discharged as an orderly enters, asking if he needs anything. He says no as a second enters; the old man asks this orderly to have the other leave. Despite his protests that he doesn't need help, the orderlies try subduing him. In the middle of his struggle, he removes one of their masks, revealing [[Orderlies (The Power of Three)|their inhuman nature]]. As the old man screams, the little girl (who had also entered the room) looks on with an expressionless face.
-December:
+During the Ponds' anniversary, [[26 June]] Amy phones the Doctor, wondering where he is; she's left several messages. He arrives with a bouquet just as she finishes her call, telling her to collect Rory as he has a present for them. He takes Amy and Rory with him to the [[Savoy Hotel]]'s opening night in [[1890]] as his anniversary gift to them. However, despite his promise that nothing would go wrong, they ended up having to stop [[Zygon]]s, who had replaced half the staff, from trying to remove their spaceship from underneath the hotel. They continued to go on several trips, during which Amy accidentally married [[Henry VIII]].
-Rory is working at the hosital, noticing that he has a repeat patient. Unbeknowst to anyone, a little girl in the waiting area is holding a box and lightly glowing blue. In a patient's room, one is reading a book while waiting for his medication. Two doctors come in and dispite the protests of the patient, try using anestic on him. He pulls the mask off one of them to discover he isn't human. The man screams in terror as the little girl, who entered the room, looks on.
+Eventually, the Doctor takes them back home to finish their anniversary with friends and family. Brian, noticing that Amy and Rory are wearing different clothes from before they left with the Doctor, asks him how long they've been gone. Explaining that it's been seven weeks, the Doctor is asked what happened to all his previous [[companion]]s. With a look of regret, the Doctor explains that most of them have left willingly or he [[Susan Foreman|purposely]] [[Peri Brown|left]] [[Adam Mitchell|them]] behind, and very few [[Katarina|have]] [[Adric|died]]. However, he promises to Brian that he will do everything he can to make sure Amy and Rory don't die while travelling with him. Admitting to Amy that he misses them, the Doctor asks if he can stay with her and Rory.
+During [[July]], exactly one year after the cubes appeared, Brian prepares to take a nap while his camera records for him; the cube spins slightly after he closes his eyes. Noticing this, he tricks it into thinking he's asleep, catching it spinning. At the Ponds' house, Rory sees a cube open on the side opposite of him. He tries to see what's inside of it, only to have the device toy with him and open on sides he can't see. Amy sees one glow and touches it, only for it to prick her hand with needles and take her pulse. Playing a [[tennis]] game on the Ponds' [[Wii]], the Doctor sees a cube float in front of the screen; he dismisses it at first but realises the severity of what's happening. He threatens that if the ones who created it wish to harm humanity, he will defend them to his last breath; it fires a laser, forcing him to flee into the hall.
-July:
+Brian arrives just as everyone meets and talks over each about what their cubes are doing. The Doctor looks back to see that his cube surfed the web and that there are news reports saying that some of the cubes have caused injuries all around the world. Rory is called in to assist with those injured in the area; Brian goes with him to offer any assistance he can. The Doctor discovers a message on his [[psychic paper]], telling him to go to the [[Tower of London]], which houses one of UNIT's bases. Kate explains that several of the cubes captured by them each display only one unique function; some harmful ones are spewing [[fire]] or causing mood swings, while the harmless ones do things such as playing the "[[Chicken Dance]]" in an endless loop. The Doctor sets a computer to look for the source of the signal activating the cubes.
-Brian continues his log, now reaching nearly an entire yeard since the cubes arrived, only to fall alseep after making sure the camera is recording. No sooner has Brain fallen asleep, the cube slightly moves. He awakens and tricks it into thinking he fell alseep to catch it moving. He quickly leaves to inform Rory and Amy. At the Ponds' house, the Doctor has arrived and is keeping himself busy with their Wii. Rory notices a cube near him open on one side and he quickly rushes over to see it open, only for the other side to open instead. Amy sees her cube acting funny and touches, only to get jabbed with needles and have it take her pulse. While playing, the Doctor notices his cube fly in front of him and he tells it that he will defend humanity against any threat it poses. It fires at him, forcing the Doctor to run. The three of them met up with each other just as Brian enters, they explain what each of their cubes is doing (as the Doctor's is searching the web) and decide they have to contact Kate Stewart. Rory gets a page and decides it's better for him to go to work. Brian agrees and says he'll help.
+Noticing that Kate is beginning to panic, the Doctor tells her not to despair as her dad didn't. Kate is left shocked as to how the Doctor figured out her identity; she's the daughter of his old friend, [[the Brigadier]]. He questions her as to why she dropped "Lethbridge" from her name, learning she did so to not get any favours from those in UNIT who knew the Brig. Kate explains that her dad taught her everything he could and that, in the words of his old friend, "Science leads", explaining why she took the position of Head of Scientific Research. The Doctor smiles; his old friend taught his daughter the most valuable lesson from their time working together. Suddenly, the cubes become inactive after 47 minutes. The Doctor is left confused and goes outside, complaining about the lack of ventilation underground bases have.
-The Doctor and Amy arrive outside the [[Tower of London]], where a UNIT base is located. Kate explains that UNIT collected several cubes, but they only display one form of activity a piece; one produces fire, one induces mood swings while another plays an annoying song. The Doctor is brought to the monitors that shows where every cube is in the world. He then reveals to Kate that he figured out she really is: the daughter of his old friend, [[The Brigadier|the Brigadier]]. Kate explains that her father lead her all the way to the end, saying science would lead the way; an old friend told him that. She also explains she dropped "Lethbridge" from her name to make sure she got by with her own creditials and not being favoured because of her heritege.
+At the hospital, Rory sends Brian to retrieve some medical supplies he needs to treat patients. Not knowing where the supplies are, Brian asks the two "orderlies" for some help. However, they ignore him. Brian continues to ask for help, seemingly annoying them as they turn around with sedatives in hand. Brian is left shocked.
+Outside the Tower, the Doctor and Amy debate the merit of travelling the way they do; Amy considers it "running away" and the Doctor considers it "running to"; he travels to see whatever the universe holds before it's gone forever. During their conversation, the Doctor realises the cubes acted out to gain attention and scan the entire planet. The power at UNIT goes out, and the cubes start a countdown from seven. The Doctor locks himself in a room with a cube, ready to confront what's inside. At zero, the cubes open but contain nothing; the Doctor is perplexed. Moments pass when around the world, people start going into [[cardiac arrest]], with the Doctor in pain with one of his [[heart]]s failing. The program he set earlier to find the source of the cubes comes up on the screen, revealing seven different sources; the nearest being the hospital where Rory works. He and Amy leave for the hospital.
+At the hospital, Rory is searching for Brian. Seeing him being wheeled into an out-of-order lift by the false orderlies, Rory follows only to find it empty. Touching the back wall in the lift, Rory finds it houses a portal. It takes him to an alien ship, which houses patients that have been kidnapped over the entire year. The two orderlies close in on him with sedatives.
+The Doctor and Amy arrive at the hospital, looking for both Rory and Brian along with the source of the cubes' signal. The Doctor discovers the little girl with the active cube and reveals her to be a simple android overseeing the entire operation. The Doctor shuts her down with the [[the Doctor's sonic screwdriver|sonic screwdriver]], but collapses in pain as one heart is not enough to keep him alive. Amy quickly grabs a [[defibrillator]] and, despite his protests, manages to restart the Doctor's other heart. The Doctor dances with joy, thanking Amy; however, he then orders her to "never do that again." They abandon the deactivated [[Outlier droid|android girl]], dead in the hallway, and continue looking for the energy source.
+Tracing the signal, they discover the same out-of-order lift and use the portal inside it to reach the [[Shakri ship|alien ship]]. The Doctor explains that the ship exists outside of the universe, and they travelled through a [[wormhole]]. They find Rory unconscious and quickly wake him. The Doctor disables the orderlies while ordering Amy and Rory to return everyone that was kidnapped through the portal. The Doctor examines the monitors, discovering that seven ships are using seven portals to reach earth. A humanoid appears on the other side of the monitors.
+Amy and Rory return, confused by the sight of him. The Doctor explains it's one of the [[Shakri]], who are told of in [[Gallifreyan]] legends as, in the Doctor's words, the "pest controllers of the universe". The Shakri consider humanity to be a plague that must not spread, hence why they've chosen to start killing them; the blackouts were caused by the cubes sucking up electricity to exterminate one-third of humanity. The Doctor says that humans have done more good than harm, and he is willing to defend them regardless of what the Shakri believe.
+With a smug smile, the humanoid announces another wave of cubes will be soon be unleashed on Earth, before vanishing. Amy is left confused as to what happened. The Doctor explains it was simply a hologram produced by the ship; similar to a "talking propaganda poster". Fiddling with the controls, the Doctor takes control of the cubes already on Earth; he manages to reverse the damage done by the cubes, restarting the hearts of everyone killed by the Shakri. However, as a downside, this task has created a backlash of energy that will blow up the ship. The Doctor, Amy and Rory flee to the portal, barely managing to get back to the hospital in time.
+[[File:Cubed Power of Three.jpg|thumb|The Doctor and the Ponds set off again.]]
+After having dinner with Amy, Rory and Brian, the Doctor prepares to take off for solo adventures again. However, Brian encourages Amy and Rory to return to being the Doctor's full-time companions; travelling with the Doctor gives them the chance to save the world and make it better. The Doctor agrees, even offering Brian a place in the TARDIS. However, Brian turns down the offer, saying that someone has to stay behind and water the plants. The Doctor and the Ponds board the TARDIS and shut the door.
+Amy narrates, saying, "So that was the year of the slow invasion when the Earth got cubed, and the Doctor came to stay. It was also when we realised something the Shakri never understood. What cubed actually means. The power of three."
 == Cast ==
@@ Line 62: / Line 100: @@
 * [[Brian Williams (Dinosaurs on a Spaceship)|Brian Williams]] - [[Mark Williams]]
 * [[Kate Stewart]] - [[Jemma Redgrave]]
-* [[Shakri]] - [[Steven Berkoff]]
+* [[Shakri (The Power of Three)|Shakri]] - [[Steven Berkoff]]
 * [[Ranjit (The Power of Three)|Ranjit]] - [[Selva Rasalingam]]
 * [[Laura (The Power of Three)|Laura]] - [[Alice O'Connell]]
-* [[Arnold Underwood]] - [[Peter Cartwright]]
+* [[Arnold Underwood]] - [[Peter Cartwright (actor)|Peter Cartwright]]
-* [[Orderlies (The Power of Three)|Orderly 1]] - [[David Beck]]
+* [[Orderly (The Power of Three)|Orderly 1]] - [[David Beck]]
-* [[Orderlies (The Power of Three)|Orderly 2]] - [[Daniel Beck]]
+* [[Orderly (The Power of Three)|Orderly 2]] - [[Daniel Beck]]
-* [[UNIT Researcher]] - [[David Hartley]]
+* [[UNIT researcher]] - [[David Hartley]]
-===Uncredited cast===
-* [[Brian Cox]] - Himself<ref name = "bbc sugar cox">{{cite web |url=http://www.bbc.co.uk/blogs/doctorwho/articles/Lord-Sugar-and-Brian-Cox-Who-Knew |title=Lord Sugar and Brian Cox: Who Knew? |author=The Doctor Who Team |date of source=22 September 2012 |website name=BBC - Blogs - Doctor Who |accessdate=22 September 2012}}</ref>
+=== Uncredited cast ===
-* [[Alan Sugar|Lord Sugar]]<!--Lord Alan Sugar is not how his name is styled--> - Himself <ref name = "bbc sugar cox" />
+* [[Brian Cox]] - Himself<ref name="bbc sugar cox">{{cite web|url=http://www.bbc.co.uk/blogs/doctorwho/articles/Lord-Sugar-and-Brian-Cox-Who-Knew|title=Lord Sugar and Brian Cox: Who Knew?|author=The Doctor Who Team|date of source=22 September 2012|website name=BBC - Blogs - Doctor Who|accessdate=22 September 2012}}</ref>
-* [[Nick Hewer]] - Himself
+* [[Alan Sugar|Lord Sugar]]<!--Lord Alan Sugar is not how his name is styled--> - Himself<ref name="bbc sugar cox" />
-* [[Karren Brady]] - Herself
+* [[Inez Solomon-Gardner]] - [[Outlier droid]]<ref>https://www.starnow.co.uk/inezsolomongardner</ref>
 == Crew ==
@@ Line 91: / Line 129: @@
 |LocationScout=
 |AssistantLocationManager=
-|LocationAssistant=Jestyn Hampson-Jones
+|LocationAssistant=Iestyn Hampson-Jones
 |UnitManager=Geraint Williams
 |AssistantUnitManager=
@@ Line 131: / Line 169: @@
 |PolecamOperator=
 |Grip=Gary Norman
-|AssistantGrip=Owen Charley
+|AssistantGrip=Owen Charnley
-|CameraAsst=Meg De Koning
+|CameraAsst=Meg de Koning
 |CameraAsst2=Sam Smithard
 |CameraAsst3=Evelina Norgren
@@ Line 167: / Line 205: @@
 |ProductionBuyer=Charlie Lynam
 |ProductionBuyer2=Adrian Greenwood<!--new-->
 |SetDecorator=Adrian Anscombe
@@ Line 193: / Line 230: @@
 |StandbyScenicArtist=
 |StorePerson=
-|ChiefPropsMaster=
+|ChiefPropMaster=
-|PropsMaster=Paul Smith
+|PropMaster=Paul Smith (prop master)
 |PropertyMaster=
-|AssistantPropsMaster=
+|AssistantPropMaster=
 |DressingChargehand=
 |PropsChargehand=Ian Griffin
@@ Line 374: / Line 411: @@
 |Producer2=
 |Director=Douglas Mackinnon
-|ExecutiveProd=Caroline Skinner
+|ExecutiveProd=Steven Moffat
-|ExecutiveProd2=Steven Moffat
+|ExecutiveProd2=Caroline Skinner
 |ExecutiveProd3=
 |DedicatedTo=<!--This exact credit never actually used as of April 2010; left for future use-->
@@ Line 396: / Line 433: @@
 }}
-== References ==
+=== Uncredited crew ===
-===[[:Category:Communications technology|Communication technology]]===
+==== Space Digital ====
-*[[Kate Stewart|Kate]] mentions [[Flickr]], [[YouTube]] and [[Twitter]].
+* [[Visual effects supervisor|VFX Supervisor]] - [[Matt Wood]]<ref name="Stargate">{{cite web|url=https://www.fxguide.com/featured/doctor-who-stargates-adventures-in-time/|title=Doctor Who: Stargate’s adventures in time|author=Failes, Ian|date of source=22 May 2013|website name=fxguide|accessdate=20 November 2018}}</ref>
+== Worldbuilding ==
+* The Doctor mentions [[millisecond]]s.
+=== Communications technology ===
+* [[Kate Stewart|Kate]] mentions [[iPad]]s, [[Flickr]], [[YouTube]] and [[Twitter]]. The mention of Twitter particularly evokes great annoyance in the [[Eleventh Doctor]].
+=== Technology ===
+* The Doctor uses several different [[magnifying glass]]es to examine the cubes.
+* Kate uses a handheld [[scanner]] to examine the Doctor's double hearts.
-===[[:Category:Game consoles|Game consoles]]===
+=== Culture ===
-*The Doctor plays tennis on the [[Nintendo]] [[Wii]].
+* The Doctor mentions an [[Achilles heel]].
-===[[:Category:Music|Music]]===
+=== Energy and radiation ===
-*The song "[[Merry Xmas Everybody]]" by the rock band [[Slade]] is briefly heard in the hospital.
+* Kate traces [[artron energy]] levels to find the Doctor and then identifies him due to his fashion sense and [[binary vascular system]].
-*One of the cubes plays the infamously irritating [[Chicken Dance song]] (aka The Birdie Song), on an endless loop. The Doctor seems annoyed.
-*The song "[[Titanium (The Power of Three)|Titanium]]" plays at the party Amy attends.
-===[[:Category:Culture|Culture]]===
+=== Foods and beverages ===
-*When Amy calls the Gallifreyan bedtime story about the Shakri weird, the Doctor remarks "You can talk. Wolf in your grandmother's night dress?" in reference to the story ''Little Red Riding Hood''.
+* The Doctor states that he invented the [[Yorkshire pudding]].
-*The Doctor tells Amy "Through the looking glass, Pond" in reference to ''[[Alice in Wonderland|Through the Looking Glass]]'' by [[Lewis Carroll]].
+* The Doctor, Amy and Rory eat [[fish custard]].
-*The Power of Three could be a a veiled reference to the American television series ''Charmed''.
-===[[:Category:Energy and radiation|Energy and radiation]]===
+=== Game consoles ===
-*[[Kate Stewart|Kate]] traced [[Artron energy]] levels to find the Doctor and then identifies him due to his fashion sense and [[binary vascular system]].
+* Though no gameplay footage is shown, sound effects indicate that the Doctor plays the "tennis" mode in ''[https://en.wikipedia.org/wiki/Wii_Sports Wii Sports]'' on the [[Nintendo]] [[Wii]].
-===[[:Category:Foods and beverages|Foods and beverages]]===
+=== Individuals ===
-*The Doctor states that he invented the [[Yorkshire Pudding]].
+* Amy accidentally marries [[Henry VIII]].
-*The Doctor, Amy and Rory eat [[fish custard]].
+* While playing virtual tennis, the Doctor mentions the tennis player [[Fred Perry]] and a pair of shorts he had borrowed from him.
+* The real physicist [[Brian Cox]] plays himself as he is interviewed on the news for an opinion about the cubes.
-===[[:Category:Individuals|Individuals]]===
+=== Music ===
-*When [[Brian Williams (Dinosaurs on a Spaceship)|Brian]] asks the Doctor what happened to those who previously travelled with him, he tells him that some left him, some got left behind, and some died.
+* The song "[[Merry Xmas Everybody]]" by the rock band [[Slade]] is briefly heard in the hospital.
-*Amy accidentally marries [[Henry VIII]].
+* One of the cubes plays the "[[Chicken Dance]]" song on an endless loop.
-*While playing virtual tennis, the Doctor mentions the tennis player [[Fred Perry]] and a pair of shorts he borrowed from him.
+* The song "[[Titanium (song)|Titanium]]" plays at the party Amy attends.
-*The real physicist [[Brian Cox]] plays himself as he is interviewed on the news for an opinion about the cubes.
+* "Don't Falter" by Mint Royale plays during the garden party.
-===[[:Category:Species|Species]]===
+=== Popular culture ===
-* There were [[Zygon]] duplicates at the Savoy when Amy, the Doctor and Rory visit.
+* The Eleventh Doctor remarks, "Through the looking-glass, Amelia?" when he and [[Amy Pond|Amy]] are about to pass through the secret portal to the [[Shakri ship]]. This is a reference to the events of the novel ''[[Through the Looking-Glass|Through the Looking-Glass, and What Alice Found There]]'', where the titular character enters the looking-glass world through a [[Mirror|looking-glass]].
+=== Species ===
+* There were [[Zygon]] duplicates at the Savoy when Amy, the Doctor and Rory visit, and the Doctor claims there is a [[Zygon spaceship]] beneath the hotel.
+=== Substances ===
+* The Doctor revives Rory with [[Saborian smelling salts]].
+=== Influences ===
+* [[Chris Chibnall]]'s brief from [[Steven Moffat]] was to "live with the Doctor — ''[https://en.wikipedia.org/wiki/The_Man_Who_Came_to_Dinner The Man Who Came to Dinner]'', ''Doctor Who'' style."
+* The plot of the episode is similar to, if not the same as, a game called ''{{w|Surviving Mars}}''. Even Brian's line: "What if they're bombs, billions of tiny bombs? Or transport capsules maybe with a mini robot inside? Or deadly hard drives? Or alien eggs? Or messages needing decoding? Or they're all part of a bigger whole, jigsaw puzzles that need fitting together?" can be found in this game.
 == Story notes ==
-[[File:DWLogoS7 Power of Three.jpg|thumb|The unique logo for ''The Power of Three''.]]
+[[File:The Power of Three logo.jpg|thumb|The unique logo for ''The Power of Three''.]]
-* For this episode, the [[Doctor Who logo|''Doctor Who'' logo]]'s texture resembled the [[cube]]s featured prominently in the episode.
+* For this episode, the [[Doctor Who logo|''Doctor Who'' logo]]'s texture resembles the [[Shakri cube]]s featured prominently in the episode. Also, the shade of red in the time vortex appears to be more crimson, rather than orange, with the lightning strikes causing an additional effect of electrical surges spreading out from the tips of the bolts. The vortex also turns purple with the sharpness seriously decreasing when the title appears.
-* The working title for this episode was ''Cubed''.<ref>{{cite web |url=http://www.sfx.co.uk/2012/07/02/doctor-who-series-7-new-episode-4-reshoot-pics/ |title=Doctor Who Series 7: New Episode 4 Reshoot Pics |author=sfx |date of source=July 2 2012  |website name=SFX |accessdate=23rd September 2012}}</ref>
+* The working title for this episode was ''Cubed''.<ref>{{cite web|url=http://www.sfx.co.uk/2012/07/02/doctor-who-series-7-new-episode-4-reshoot-pics/|title=Doctor Who Series 7: New Episode 4 Reshoot Pics|author=sfx|date of source=July 2 2012 |website name=SFX|accessdate=23rd September 2012}}</ref>
+* The character of Kate was introduced in the 1995 made-for-video independent production [[HOMEVID]]: ''[[Downtime (home video)|Downtime]]''.
+* Though not made clear in the episode, the scene in Henry VIII's bedroom was intended to show the TARDIS trio returning to get Rory's mobile phone charger after Rory had left it behind before [[TV]]: {{cs|A Town Called Mercy (TV story)}}. ([[TCH 71]])
+* [[Chris Chibnall]] is the first non-showrunning writer in the revived series to write multiple stories within the same season, having previously written [[TV]]: {{cs|Dinosaurs on a Spaceship (TV story)}}. He would later become the showrunner in [[2018]].
+* This is the last appearance of the Eleventh Doctor's blue bow tie, which he wears along with his more commonly worn red one to reflect the length of time passed in this story.
+* Chris Chibnall was inspired by the story of the [https://en.wikipedia.org/wiki/MSC_Napoli MSC ''Napoli'']'','' a [[2007]] shipwreck along the Devon coast near his home, when people showed up in droves to claim cargo which had washed up on the shore. This led to the notion of the general public collecting alien items which initially appeared to be innocuous, but which would ultimately be revealed to have a more sinister purpose.
+* [[Matt Smith]] put disgust into the Doctor's remark concerning [[Twitter]] in the episode, reflecting his real-life decision to stay off the social network.
+* One major element of Chris Chibnall's early drafts which was eventually dropped involved the appearance of [[Prime minister|Prime Minister]] [[Stephen Carter]]. Suspicious of the Doctor, Carter would bar him from the United Kingdom, resulting in the Doctor's absence from a long stretch of the narrative.
+* Brian was initially uneasy when Amy and Rory decided to take “one more trip” in the TARDIS. [[Steven Moffat]] suggested that Brian should instead encourage his son and daughter-in-law to go with the Doctor, providing a less sombre and more subtle lead-in to their departure in {{cs|The Angels Take Manhattan (TV story)}}.
+* The episode comprised Block Three of season seven.
+* Matt Smith enjoyed working with [[Jemma Redgrave]], describing her as "graceful, funny and charming and an absolute delight".
+* There was a deleted side-adventure where Amy and Rory defused a bomb which threatened an alien convoy. [[Okezie Morro]] and Henry Luxemburg were cast as bomb disposal experts Conroy and Sullivan.
+* This was the last episode to filmed at [[Upper Boat Studios]]. The series then transferred to [[Roath Lock|Roath Lock Studios]].
+* Chris Chibnal described the episode as as "a lovely big Earth invasion story" but different from the ones done before, as it focused on Amy and Rory's time with the Doctor and the impact of him on their lives. He stated it is told more from Amy and Rory's point of view than ever before, and is about celebrating them before they leave.
+* The episode originally began with scenes such as the adventure with Henry VIII and Amy at the engagement party. These were re-scheduled to introduce the invasion storyline earlier.
+* There was originally an extended action sequence where Rory took down the two orderlies who captured him.
+* The climax was originally very different. The Shakri was physically present, rather than merely appearing as a hologram. He was defeated when Amy and Rory attacked him with the syringes they had retrieved from the orderlies, and the Doctor used his sonic screwdriver on the Shakri's devastating ocular weaponry. However, it was felt that this part of the narrative detracted from the focus on Amy and Rory's life together, and so Chris Chibnall prepared new material to replace it. As a result, new material in the Ponds' house was shot.
+* Chris Chibnall was keen to revive [[Russell T Davies]]' tradition of celebrity cameos. He initially suggested the judges of either ''[[Britain's Got Talent]]'' or ''[[The Voice]]'' before settling on ''[[The Apprentice]]''.
+* [[Douglas Mackinnon]] made a cameo as Craig, the hapless contestant on ''The Apprentice''.
+* This was the last episode that [[Karen Gillan]] and [[Arthur Darvill]] filmed. Their last scene filmed together was getting into the TARDIS with the Doctor after saying farewell to Brian; when the doors closed they hugged Matt Smith and started crying.
+* [[Marcus Wilson]] stated that a "hundred" individual cube props were made, with "many more" added with CGI.
+* The Doctor and Amy's conversation outside the Tower of London could not be filmed at the genuine location due to the [[2012 Olympics|London Olympics]], so it was shot on studio in Cardiff and the live action footage of them was composited with other footage of London, using visual effects to create the illusion.
+* Before being taken by android orderlies himself, Arnold Underwood was to make reference to a neighbour named Elizabeth Cracknell who had not returned home from the hospital.
+* [[Douglas Mackinnon]] had previously directed [[Steven Berkoff]] in ''[https://en.wikipedia.org/wiki/The_Flying_Scotsman_(2006_film) The Flying Scotsman].'' He told ''[[Starburst (magazine)|Starburst]]'' that "The experience of working with him on ''Doctor Who'' was something that'll never be repeated; you could ask anyone on the cast or crew and they'll agree that his participation was extraordinary."
+* Kate's look of incredulous joy when the Doctor mentions her father was heavily influenced by [[Jemma Redgrave]]'s own love and admiration for her late father, [https://en.wikipedia.org/wiki/Corin_Redgrave Corin], who had passed away only a couple of years prior to filming.
+* Steven Berkoff filmed his part in three days. Despite playing the main villain, he only has eight lines of dialogue.
+* This was [[Peter Cartwright (actor)|Peter Cartwright]]'s final television role. He passed away shortly afterwards.
+* Originally, the abductee who led Rory to the Shakri ship was a patient named Anne.
+* [[Chris Chibnall]] drew upon his childhood love of the [[Jon Pertwee]] era, which led to the inclusion of UNIT and Kate Stewart as a tribute to the Brigadier.
 === Ratings ===
-* The episode received an overnight viewership of 5.49 million people in the UK.
+* The episode was first broadcast in the United Kingdom on [[BBC One]] and BBC One HD on [[22 September (releases)|22 September]] [[2012 (releases)|2012]]. Overnight ratings showed that it was watched by an audience of 5.49 million live. The final consolidated rating rose to 7.67 million viewers, making it the thirteenth most-watched programme of the week on [[British]] television, and the fifth highest rated on BBC One.<ref>[http://guide.doctorwhonews.net/info.php?detail=ratings&type=date Doctor Who Ratings - UK final]</ref> The episode also received 1.3 million requests on [[BBC iPlayer]], placing it fourth for the month on the site behind the first three episodes of the series. It also received an Appreciation Index of 87, considered "excellent".
 === Filming locations ===
-Belle Vue Park, Albert Road, Penarth (filming took place on June 28 2012)
+* Belle Vue Park, Albert Road, Penarth.
+* The satellite view depicting Rory's hospital and its environs was over the BBC's sprawling complex at White City, Hammersmith. The view is rotated 90 degrees, such that west is at the top of the screen. The building highlighted as the hospital is BBC Centre House.
 === Production errors ===
 {{discontinuity}}
-*In some shots when the cubes are counting down from 7, some cubes are missing the numbers in one shot and then have them in the next.This can be seen at 28:01 when the doctor is in the ''room'' with the cube, and when the nurse is removing the cubes from the hospital at around 25:44
+* After [[Kate Lethbridge-Stewart]] enters Amy and Rory's house, we see her take out her scanner. When she originally takes it out, her screen is facing the Doctor, and in the next shot, it is facing away from him.
+* In some shots when the cubes are counting down from 7, some cubes are missing the numbers in one shot and then have them in the next. This can be seen at 28:01 when the Doctor is in the room with the cube, and when the nurse is removing the cubes from the hospital at around 25:44.
+* When Amy lifts her legs to allow the Doctor to vacuum the floor beneath her feet, Karen Gillan's audio recorder can be seen in the back pocket of her jeans.
 == Continuity ==
-* Rory's father [[Brian Williams (Dinosaurs on a Spaceship)|Brian]] reappears. ([[TV]]: ''[[Dinosaurs on a Spaceship]]'')
+* In the first scene, Amy cleans out the fridge while Rory listens to their 59 phone messages. One message is a reminder from an optician who informs that "your reading glasses are ready for collection". In [[The Angels Take Manhattan (TV story)|the next episode]], Amy is wearing readers, which the Doctor first borrows and eventually keeps; they appear in several later episodes.
-* The [[Eleventh Doctor]], [[Amy Pond|Amy]] and [[Rory Williams|Rory]] have [[fish custard]]. ([[TV]]: ''[[The Eleventh Hour]]'')
+* Rory's father [[Brian Williams (Dinosaurs on a Spaceship)|Brian]] reappears. ([[TV]]: {{cs|Dinosaurs on a Spaceship (TV story)}})
-* [[Kate Stewart]] is the daughter of Brigadier [[Alistair Gordon Lethbridge-Stewart]]. She previously appeared on-screen in [[HOMEVID]]: ''[[Downtime]]'' and ''[[Dæmos Rising]]'', as well as the book, ''[[The Scales of Injustice (novel)|The Scales of Injustice]]''.
+* Brian's theory that the cubes may be capsules containing minirobots is unwittingly reminiscent of a plan later implemented by [[Cassandra O'Brien.Δ17|Lady Cassandra]] on [[Platform One]]. ([[TV]]: {{cs|The End of the World (TV story)}})
-* Ten years have passed since the events of ''[[The Eleventh Hour]]'' in Amy's personal timeline.
+* The [[Eleventh Doctor]], [[Amy Pond|Amy]] and [[Rory Williams|Rory]] have [[fish custard]]. ([[TV]]: {{cs|The Eleventh Hour (TV story)}})
-* The Doctor, talking to a flying cube, says "Is that all you can do? Hover? I'd a metal dog that could do that" referring to an unspecified version of [[K9]].
+* [[Kate Stewart]] is the daughter of Brigadier [[Alistair Gordon Lethbridge-Stewart]]. ([[HOMEVID]]: ''[[Downtime (home video)|Downtime]]'', ''[[Dæmos Rising (home video)|Dæmos Rising]]'', [[PROSE]]: ''[[The Scales of Injustice (novel)|The Scales of Injustice]]'')
-* The Doctor once again asks how humans cope with just one heart. ([[TV]]: ''[[The Shakespeare Code]]'')
+* The Doctor, talking to a flying cube, says, "Is that all you can do? Hover? I had a metal dog that could do that", referring to [[K9]]. ([[TV]]: ''[[The Invisible Enemy (TV story)|The Invisible Enemy]]'' et al.)
-* Twitter is mentioned again, the Doctor seems similarly unimpressed. ([[TV]]: ''[[The Girl Who Waited]]'')
+* The Doctor once again has one of his hearts stop beating and asks how humans cope with just one heart. ([[TV]]: {{cs|The Shakespeare Code (TV story)}})
-* The [[UNIT]] base beneath the [[Tower of London]] is visited. It was previously mentioned in [[TV]]: ''[[The Christmas Invasion (TV story)|The Christmas Invasion]]'' and ''[[The Sontaran Stratagem]]''.
+* The [[UNIT]] base beneath the [[Tower of London]] is visited. It was previously seen in {{cs|The Christmas Invasion (TV story)}} and mentioned {{cs|The Sontaran Stratagem (TV story)}}.
-* The Ponds' anniversary takes place. They were married in [[Leadworth]] on [[26 June]] [[2010]]. ([[TV]]: ''[[The Big Bang (TV story)|The Big Bang]]'')
+* A [[voice interface]] was last seen in {{cs|Let's Kill Hitler (TV story)}}.
-* A voice interface was last seen in [[TV]]: ''[[Let's Kill Hitler]]''.
+* Rory kisses the Doctor on the cheek. The Doctor previously kissed Rory on the mouth in a moment of excitement. ([[TV]]: {{cs|Dinosaurs on a Spaceship (TV story)}})
-* Rory kisses the Doctor on the cheek. The Doctor previously kissed Rory on the mouth in ''[[Dinosaurs on a Spaceship]]''.
+* The Doctor unintentionally reveals his hiding place to Henry VIII by sneezing. In a previous adventure, whilst hiding from another king, Charles II, he gave away his location by sneezing. ([[TV]]: {{cs|The Impossible Astronaut (TV story)}})
-* Whilst hiding from [[Henry VIII]], the Doctor is holding a [[Mobile phone]] charger, which is apparently dropped as he sneezes. ([[TV]]: ''[[A Town Called Mercy (TV story)|A Town Called Mercy]]'')
+* Whilst hiding from [[Henry VIII]], the Doctor is holding a [[mobile phone]] charger. Rory had left the charger in Henry VIII's en suite. ([[TV]]: {{cs|A Town Called Mercy (TV story)}})
-* The Doctor mentions that he's run restaurants before, possibly a reference to [[PROSE]]: ''[[The Crystal Bucephalus (novel)|The Crystal Bucephalus]]''.
+* The Doctor mentions that he's run restaurants before. ([[PROSE]]: ''[[The Crystal Bucephalus (novel)|The Crystal Bucephalus]]'')
-* The Doctor unintentionally reveals his hiding place to Henry VIII by sneezing. In a previous adventure, whilst hiding from another royal, Charles II, he gives away his location by sneezing. ([[TV]]: ''[[The Impossible Astronaut (TV story)|The Impossible Astronaut]]'')
+* The Doctor tells Brian that companions have left him, ([[TV]]: ''[[The Chase (TV story)|The Chase]]'', et al.) been left behind, ([[TV]]: ''[[The Dalek Invasion of Earth (TV story)|The Dalek Invasion of Earth]]'', et al.) and a very few have died. ([[TV]]: ''[[The Daleks' Master Plan (TV story)|The Daleks' Master Plan]]'', ''[[Earthshock (TV story)|Earthshock]]'', [[AUDIO]]: ''[[To the Death (audio story)|To the Death]]'')
-* The Doctor tells Brian that companions have left him ([[TV]]: ''[[The Last of the Time Lords]]''), been left behind ([[TV]]: ''[[The Dalek Invasion of Earth (TV story)|The Dalek Invasion of Earth]]''), and a very few have died ([[TV]]: ''[[Earthshock (TV story)|Earthshock]]'').
+* A [[defibrillator]] has been used on the Doctor before. ([[TV]]: {{cs|Doctor Who (TV story)}})
+* Although he hates it, the Doctor gives a salute to Kate, like the Tenth Doctor did when he was reunited with the Brigadier. ([[COMIC]]: ''[[The Warkeeper's Crown (comic story)|The Warkeeper's Crown]]'')
+* The Doctor fearing that the Ponds will fade out of his life and Brian's wishes to get them back home safely, foreshadows the following story {{cs|The Angels Take Manhattan (TV story)}}.
+* The segment of the story taking place in June specifically takes place on [[26 June]], as Amy says in her voicemail to the Doctor that it's her and Rory's wedding anniversary. ([[TV]]: {{cs|The Big Bang (TV story)}})
+* The Doctor has previously shown a boredom of experiencing time pass normally in [[TV]]: {{cs|Vincent and the Doctor (TV story)}}.
+* The Doctor again voices a disdain for [[Twitter]]. ([[TV]]: {{cs|The Girl Who Waited (TV story)}})
 == Home video releases ==
+[[File:Series7DVDcover.jpg|thumb|Series 7, part 1 DVD cover.]]
-=== DVD releases ===
+=== DVD & Blu-ray releases ===
-''to be added''
-=== Blu-ray releases ===
+* ''The Power of Three'', along with the rest of the first half of the series (episodes one through to five) was released as Series 7 Part One on DVD and Blu-ray in region 1/A on [[13 November (releases)|13 November]] [[2012 (releases)|2012]], in region 2/B on [[29 October (releases)|29 October]] 2012 and in region 4/B on [[14 November (releases)|14 November]] 2012.
-''to be added''
+* The short documentary ''[[A Writer's Tale]]'' focused on the making of this story.
+* Also, this episode was released as part of the Complete Seventh Series boxset on DVD and Blu-ray in region 1/A on [[24 September (releases)|24 September]] [[2013 (releases)|2013]], in region 2/B on [[28 October (releases)|28 October]] 2013 and in region 4/B on [[30 October (releases)|30 October]] 2013.
+=== Digital releases ===
+* In the United Kingdom, this story is available on [[BBC iPlayer]].
 == External links ==
-''to be added''
+* {{locguide|powerofthree|The Power of Three}}
+{{dwrefguide|who_tv73.htm|The Power of Three}}
 == Footnotes ==
 {{Reflist}}
+{{DWTV}}
+{{UNIT stories}}
 {{TitleSort}}
-{{ImageLink}}
 {{cat|Doctor Who (2005) television stories}}
-{{cat|2012 television stories}}
-{{cat|Eleventh Doctor television stories}}
+[[Category:Stories set in the 16th century]]
-[[es:The power of three]]
-[[Category:Stories set in England]]
-[[Category:Stories set in London]]
-[[Category:Stories set in 1890]]
-[[Category:Stories set in the Sol System]]
-[[Category:Series 7 (Doctor Who) stories]]
-[[Category:Stories set in England]]
 [[Category:Stories set in London]]
 [[Category:Stories set in 1890]]
-[[Category:Stories set in the Sol System]]
 [[Category:Series 7 (Doctor Who) stories]]
-[[Category:Stories set in England]]
+[[Category:Zygon television stories]]
-[[Category:Stories set in London]]
-[[Category:Stories set in 1890]]
-[[Category:Stories set in the Sol System]]
-[[Category:Series 7 (Doctor Who) stories]]
-[[Category:Stories set in England]]
-[[Category:Stories set in London]]
-[[Category:Stories set in 1890]]
-[[Category:Stories set in the Sol System]]
-[[Category:Series 7 (Doctor Who) stories]]
-[[Category:Zygon stories]]
 [[Category:Stories set in the 21st century]]
+[[Category:UNIT television stories]]
+[[Category:Stories set at Christmas]]
+[[Category:Stories with unique variations of the Doctor Who opening titles]]
+[[Category:Television stories that use Murray Gold's 3rd main theme]]
+[[Category:2012 television stories]]
+[[fr:The Power of Three (TV)]]
+[[he:כוח השלושה]]

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