12 January 1974
Nicholas Courtney (Brigadier Lethbridge-Stewart), John Bennett (General Finch), Richard Franklin (Captain Yates), John Levene (Sergeant Benton), Ben Aris (Lieutenant Shears), Dave Carter (Sergeant Duffy), Martin Taylor (Corporal Norton), George Bryson (Private Ogden), John Caesar (R/T Soldier), Gordon Reid (Phillips), Trevor Lawrence (Lodge), Terry Walsh (Warehouse Looter), Noel Johnson (Charles Grover M.P.), Peter Miles (Professor Whitaker), Martin Jarvis (Butler), James Marcus (Peasant), Pat Gorman (UNIT Corporal), Terence Wilton (Mark), Carmen Silvera (Ruth), Brian Badcoe (Adam), Colin Bell (Private Bryson), Timothy Craven (Robinson).
|Written by||Malcolm Hulke|
|Directed by||Paddy Russell|
|Produced by||Barry Letts|
The Doctor and Sarah Jane Smith arrive in a deserted London, where UNIT is assisting in maintaining martial law. The regular army, headed by General Finch, has evacuated the city and issued a command that all looters will be shot. The Doctor and Sarah are arrested on suspicion of looting, but are rescued by Brigadier Lethbridge-Stewart who is heading the UNIT operation. The Doctor learns that dinosaurs are appearing all over the city, causing havoc, but no one can account for their sudden appearances and disappearances.