Part FiveSeries Episode Number: 396
World Premiere: Sat 5 Apr 1975 - 5:30pm BST [BBC One] (United Kingdom)
First Broadcast: Mon 17 Mar 1980 - 5:30pm CST [WTTW 11 Chicago]
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.