Episode Four
Series Episode Number: 247World Premiere: Sat 10 May 1969 - 5:15pm BST [BBC One] (United Kingdom)
First Broadcast: Sun 30 Nov 1986 - 11:25pm CST [WTTW 11 Chicago]
Running Time: 23 minutes 30 seconds
5.70 Million (UK)
Appreciation Index: 50 (UK)Chart Position: 63 () (UK)
Recorded on Fri 02 May 1969 in Television Centre 4
Archive State: 16mm t/r
The Doctor and Zoe penetrate the Aliens' HQ from where the war games are controlled. Carstairs is reconditioned and exposes the Doctor and Zoe as German spies.
| Production Team include uncredited | ||
|---|---|---|
| Writer |  | Malcolm Hulke |
| Writer |  | Terrance Dicks |
| Director |  | David Maloney |
| Producer |  | Derrick Sherwin |
| Designer | | Roger Cheveley |
| Incidental Music |  | Dudley Simpson |
| Title Music |  | Ron Grainer |
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