Plot
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.
Trailer
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
Glenn Robards
Mr. Devonshire
Diana Chesney
Mrs. Fellows
Victor Rogers
Mr. Fellows
Michael Flanagan
Director
Martin Ashe
Butler
Robert Wood
Tony
John Wheeler
Studio Guard
Alex Rodine
1st Officer
Don Marshall
FBI Man #1
Mel Prestidge
Governor's Aide
Lewis Arquette
Judge
Judd Laurance
Technician
Michael Macready
FBI Man #2
Richard Rorke
Helicopter Pilot
Marcus K. Mukai
Hawaiian Man
Snag Werris
Camera Man
Micki Waugh
Pom Pom Girl
Alisa Powell
Pom Pom Girl
Portia Stevens
Pom Pom Girl
Candace Bowen
Pom Pom Girl
Mario Machado
Reporter (uncredited)
Stan Rodarte
Reporter at Homecoming Parade (uncredited)