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.
Director: Leslie H. Martinson
Genre: Comedy, TV Movie
Cast: Alan Hale Jr., Bob Denver, Dawn Wells, Jim Backus, Judith Baldwin, Natalie Schafer, Russell Johnson