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When an agent at the Ministry of Top-Secret Information is murdered, Steed and Tara have little difficulty in locating the man responsible. But when a handwriting test indicates that he is Boris Kartovski, someone Steed thought he had killed in Berlin 5 years before, our heroes find themselves drawn into the dangerous experiments of Dr. Constantine.
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
