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.
Leslie H. Martinson
Director
David P. Harmon
Writer
Al Schwartz
Writer
Elroy Schwartz
Writer
Sherwood Schwartz
Writer

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
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