Last updated 19 August 2023

Part Four

Part Four

Series Episode Number: 569

World Premiere: Tue 23 Feb 1982 - 7:05pm GMT [BBC One: Not Wales] (United Kingdom)
First Broadcast: Fri 17 Apr 2015 - 8:30pm EDT [Retro TV]
Running Time: 23 minutes 32 seconds

10.10 Million (UK)

Chart Position: 40 () (UK)

Recorded on Thu 04 Jun 1981 in Television Centre 6

The Doctor discovers more Terileptil criminals in hiding in London. As he battles them, their soliton gas generator explodes, setting the city ablaze...