When a decaying Russian satellite crashes on the island, the Professor uses a key component for a barometer. With that device, he learns that a massive wave is going to swamp the island. In desperation, the castaways lash their huts together into one structure in order to have any chance to ride the disaster out.
Directed by Leslie H. Martinson
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TrailerNBC promo Rescue from Gilligan's Island 1978
Images
Cast

Bob Denver
Gilligan

Alan Hale Jr.
Skipper Jonas Grumby

Jim Backus
Thurston Howell III

Natalie Schafer
Lovey Wentworth Howell

Judith Baldwin
Ginger Grant

Russell Johnson
Professor Roy Hinkley, Jr.

Dawn Wells
Mary Ann Summers

Vincent Schiavelli
Dimitri

Art LaFleur
Ivan

Norman Bartold
Producer
Barbara Mallory
Cindy Smith
June Whitley Taylor
Miss Ainsworth
Martin Rudy
Dean
Mary Gregory
Mrs. Devonshire
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