Doctor Who: Scream of the Shalka S1E5 backdrop

Doctor Who: Scream of the Shalka (2003)

S1E5 Escape to Danger

Dec 11, 2003 Season 1 Episode 5 Action & Adventure, Animation, Kids, Sci-Fi & Fantasy

Alison has received a Shalka implant, granting her the ability to command the evacuees. Meanwhile, the Doctor realizes that the aliens have activated other groups globally to eliminate Earth's atmosphere and exterminate humanity.