Episode 7Series Episode Number: 169
World Premiere: Sat 1 Jul 1967 - 6:24pm BST [BBC One] (United Kingdom)
Running Time: 24 minutes 33 seconds
6.10 Million (UK)Appreciation Index: 56 (UK)
Chart Position: 50 () (UK)
Recorded on Sat 24 Jun 1967 in Lime Grove D
Archive State: Missing
The human factor is spreading through the Dalek city and Dalek fights Dalek in a civil war. The Doctor and his friends are caught in the crossfire. Not all will survive the battle.