AllMovie

Harold J. Stone guest stars as Alexi Gregor Dubov, an eccentric painter who has arrived on the island to escape civilization. It turns out that Dubov has a short-wave radio transmitter--but he has no intention of using it to help the castaways get of the island. In an effort to force Dubov to contact the mainland, the castaways devise a devastating blow to the painter's ego by convincing him that goofy Gilligan (Bob Denver) is an artistic genius.