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Jeannie's sister returns for a final time to foul things up again. This time, she poses as her sister and makes the others think she is having an affair with another astronaut named Biff Jellico (Played by Eden's real life husband Michael Ansara) all the while Tony and Jeannie are oblivious to it.
First Air Date : Sep 18, 1965
Last Air date : May 26, 1970
Episode : 139 Episode
Season : 5 Season
Runtime: 25:14 minutes
Studio: NBC
Country: United States of America
Cast: Barbara Eden, Larry Hagman