The Invisible Enemy (TV story)

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The age of Man is over, Doctor. The age of the virus has begunNucleus


Synopsis

A rocket with three men are near complete their mission to Titan Base until a course change puts the rocket in the path of a strange cloud in space. By the time they have arrived, they have changed and serve a sentient virus which threatens the galaxy. When the TARDIS picks up an emergency message, it flies into the cloud, infecting the Doctor himself. To save himself and others, the Doctor must undertake a dangerous journey.

Plot

The TARDIS is infiltrated by the Swarm - a space-borne intelligence that wishes to spread itself across the universe - and the Doctor is infected by its nucleus. The ship then materialises on Titan, one of the moons of Saturn, where the human occupants of a refuelling station have also been taken over.

The Doctor eventually collapses as a result of his infection, but first manages to relay to Leela the coordinates of a local hospital asteroid. At the Bi-Al Foundation, based on the asteroid, Professor Marius clones the two time travellers, miniaturises the clones using the relative dimensional stabiliser from the TARDIS and then injects them into the Doctor's body in the hope that they can find and destroy the nucleus.

The plan backfires as the nucleus escapes from the Doctor in place of the clones and is enlarged to human size. The creature arranges for itself to be taken back to Titan, where breeding tanks have been prepared for it.

The Doctor, now cured of its influence, enlists the help of K9, Professor Marius's dog-shaped robot computer, and sets a booby-trap that results in the breeding tanks being blown up, killing the nucleus. Marius gives K9 to the Doctor as a parting gift.

Cast

Crew

References

  • K9 states the first successful cloning experiments were carried out in the year 3922. He adds that "the Kilbracken holograph cloning technique replicates from a single cell a short lived copy. Efficiency of individualisation not completely guaranteed."
  • Professor Marius is said to be an expert in extra terrestrial pathological endomorphisms.
  • Leela seems to have learned how to operate the TARDIS since she is able to program it to the Bi-Al.
  • Leela tells the receptionist that the Doctor is from Gallifrey which she believes to be in Ireland.
  • Marius presumes that the Doctor is a spacenik.

Story Notes

  • This story had the working titles; The Invader Within, The Enemy Within and The Invisible Invader.
  • This story was listed on the 1970s sound effects LP as "The Enemy Within" which would go on to become the second-hand title given to the 1996 television movie.
  • This is the story which introduced K-9.
  • This story also re-introduces the 'old' white console room (though slightly redesigned by Barry Newbery) rather than the 'wooden' secondary console room which debuted in The Masque of Mandragora.

Ratings

  • Part 1 - 8.6 million viewers
  • Part 2 - 7.3 million viewers
  • Part 3 - 7.5 million viewers
  • Part 4 - 8.3 million viewers

Myths

to be added

Filming Locations

Discontinuity, Plot Holes, Errors

  • When the TARDIS first arrives on Titan, in the background you can see one of the relief ship crew still helmeted.
  • Why when the infected crew members arrive on Titan don't they infect the base personnel instead of killing them? The crew member's infection is still in its early stages and is not yet contagious.
  • The cloning of the Doctor and Leela seems to have also cloned their clothes. No doubt due to 51st century technological advances in the field of not showing nudity on television.
  • The nucleus was clearly on wheels.
  • Several times during the episode, the signs for the "Isolation Ward" are spelled "Isolayshun." There are other misspellings, not only with the Isolation Ward but in the various other locations in which this story is set, and this could be due to a drastic change of what was accepted as correct spelling, or a spelling based on phonetics (i.e. spelling what it sounds like). This is the far future after all.
  • The interior of the Doctor's brain seems strangely lacking in fluid and other mucas that would drown the miniaturised Doctor & Leela. Also why is there a 'screen' with pictures of cogs and pillars floating across it? The Doctor's brain is that of a Time Lord, therefore there is no reason to believe its physiology should in any way be in keeping with the principles of human neurobiology.

Continuity

  • K-9 joins the Doctor and Leela, he departs with Leela in DW: The Invasion of Time.
  • Leela is left-handed, or at least writes with her left hand. Actress Louise Jameson is right-handed, but chose to make Leela a left-handed writer in order to increase her awkwardness at this task.

DVD, Video and Other Releases

DVD release

PAL -
PAL -
NTSC -
  • This story was on DVD release on 16 June, 2008 in a K-9 Tales Box Set. It was released in the Box Set alongside K-9 and Company.
  • Early versions of the box set feature a fault on The Invisible Enemy disc. A scene from half way through episode 3 is skipped and appears after the closing credits. 2Entertain is aware of the problem but have decided to go on with the release as planned. Though they are trying to fix the problem for later copies of the DVD box set.

Notes:

Novelisation

Invisible Enemy novel.jpg
Main article: Doctor Who and the Invisible Enemy

See also

Stories involving shrinking

External Links

Template:Season 15

TVStub.png
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