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A UFO hides in a lake on a country estate of a well-known equestrian, and the equestrian himself vanishes. When SHADO tracks down the UFO and manages to destroy it in an exchange of pot-shots, the UFO breaks up and leaves a thing floating in the water. Treated as if it is a bomb, it is brought back to SHADO and examined, with unexpected results.
First Air Date : Sep 16, 1970
Last Air date : Mar 15, 1973
Episode : 26 Episode
Season : 1 Season
Runtime: 48 minutes
Studio: Associated Television
Country: United Kingdom, United States of America
Cast: Ed Bishop
Crew: