S04E05: 'The Poison Sky'

Can Wilf escape from the car? Will The Doctor suss out the Martha clone? Is General Staal going to track down Rik Mayall and Ade Edmondson for a Young Ones reunion? Of course, we're not going to give the game away on those fronts. But we will dish up a few tasty spoilers about what's blowing around in 'The Poison Sky' - a decent episode that doesn't quite capitalise on the premise. If only Graeme Harper could have been behind the camera. Ah yes - there are two fake spoiler red herrings this week!

Donna's mother Sylvia wields an axe.

A jellyfish-like Rutan army makes an appearance (via a Sontaran flashback).

The Sontarans steal the Tardis.

UNIT prepare to launch a nuclear strike.

Donna kills a Sontaran via the probic vent and booms out "back of the neck!"

The Valiant is put to good use by Colonel Mace.

The current whereabouts (and official title) of Alastair Lethbridge-Stewart are revealed.

Donna punches the real Martha in the face - believing her to be the clone.

Luke has devised a mating programme for his genius recruits.

The Doctor puts on a gas mask to combat the poisonous sky and squeals "are you my mummy?"

> Click here for our review of 'The Sontaran Stratagem'