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The Director of Operations (Disco) of the Nutshell, a subterranean World War III bunker, tells Steed and Cathy that Big Ben, a file giving details of all their double agents, has been copied. Security cameras point to a young girl, but she is later found dead. Evidence implicates Steed, and Disco orders that he be apprehended.
First Air Date : Jan 07, 1961
Last Air date : May 21, 1969
Episode : 161 Episode
Season : 6 Season
Runtime: 50:60 minutes
Studio: ITV1
Country: United Kingdom
Cast: Patrick Macnee, Linda Thorson
