1h 35m
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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.
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
Mary Gregory
Mrs. Devonshire
Diana Chesney
Mrs. Fellows
Martin Ashe
Butler
Alex Rodine
1st Officer
Don Marshall
FBI Man #1
Lewis Arquette
Judge
Mario Machado
Reporter (uncredited)
Stan Rodarte
Reporter at Homecoming Parade (uncredited)