The Poison Sky (TV story)

The planet's going nuclear!Staal

	[[doctor::Tenth Doctor]]
	Donna Martha (Reintroduction)
	Sontarans
	London, 2009
	Helen Raynor
	Douglas Mackinnon
	Susie Liggat
	4
	3rd May 2008
	1 45 minute episode
	4.5

Synopsis

The Valiant clears the ATMOS gas as the Sontarans activate their masterplan to turn Earth into their cloning planet. UNIT is left defenceless, with a traitor in their ranks. And as interplanetary war edges closer, Doctor has to fight to keep both Martha and Donna alive - but will he have to make the ultimate sacrifice?

Plot

To be added

Cast

• The Doctor - David Tennant
• Donna Noble - Catherine Tate
• Martha Jones - Freema Agyeman
• Rose Tyler - Billie Piper
• Wilfred Mott - Bernard Cribbins
• Sylvia Noble - Jacqueline King
• General Staal - Christopher Ryan
• Commander Skorr - Dan Starkey
• Colonel Mace - Rupert Holliday Evans
• Luke Rattigan - Ryan Sampson
• Ross Jenkins - Christian Cooke
• Private Harris - Clive Standen
• Private Gray - Wesley Theobald
• Newsreader - Kirsty Wark
• American Newsreader - Lachele Carl

Production crew

To be added

References

• The Doctor mentions the Rutans and their war with the Sontarans.
• The Brigadier is mentioned to be stranded in Peru.
• The Doctor wears a gas mask and asks "Are you my mummy?" like the Empty Child in Albion Hospital, as a reference to The Empty Child.

Story notes

• Helen Raynor wrote this episode. Her Series 3 episodes Daleks in Manhattan and Evolution of the Daleks both occupied fourth and fith episode in the series. This two part episode also occupies episode four and five.
• This is part two of a two part story that began with The Sontaran Strategem.
• This two parter is Douglas Mackinnon's first story as director.
• The Valiants primary laser is a reference to the Death Star.
• Rose Tyler is seen for a split-second on the TARDIS screen.

Ratings

To be added

Myths

to be added

Filming locations

To be added

Continuity

• The Valiant last appeared in Last of the Time Lords.
• At the end of the episode when the Tardis flys of the doctor says his what, what, what line from Donna's first appearence in The Runaway Bride.

Discontinuity, Plot Holes, Errors

• A corridor explodes with Sontarans inside it. This is the same corridor that exploded in the Torchwood episode Sleeper. The corridor in Sleeper was in Cardiff but the one in this episode is in London. A similar mistake occured in Partners in Crime.

DVD and other releases

• It will be released on the Series 4 boxset DVD in November 2008.

External Links

To be added.