Part Five
Series Episode Number: 396World Premiere: Sat 5 Apr 1975 - 5:30pm BST [BBC One] (United Kingdom)
Running Time: 23 minutes 27 seconds
9.80 Million (UK)
Appreciation Index: 57 (UK)Chart Position: 30 () (UK)
Recorded on Wed 12 Feb 1975 in TC6
With Harry and Sarah his prisoners, Davros interrogates the Doctor, forcing him to reveal the future of the Daleks so that he can learn from their defeats to make them stronger.