Episode 5
Series Episode Number: 190World Premiere: Sat 20 Jan 1968 - 5:24pm GMT [BBC One] (United Kingdom)
Running Time: 24 minutes 22 seconds
6.90 Million (UK)
Appreciation Index: 49 (UK)Chart Position: 73 () (UK)
Recorded on Sat 30 Dec 1967 in Lime Grove D
Archive State: Found (11-Oct-13)
Impersonating Salamander, the Doctor infiltrates the research centre, but Benik becomes suspicious. Underground, Salamander's deception is discovered.
| Production Teaminclude uncredited | ||
|---|---|---|
| Writer |  | David Whitaker |
| Director |  | Barry Letts |
| Producer |  | Innes Lloyd |
| Designer |  | Christopher Pemsel |
| Story Editor | | Peter Bryant |
| Title Music |  | Ron Grainer |
| and the | | BBC Radiophonic Workshop |
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