Gilligan's Island is an American sitcom created and produced by Sherwood Schwartz. The show's ensemble cast features Bob Denver, Alan Hale Jr., Jim Backus, Natalie Schafer, Tina Louise, Russell Johnson and Dawn Wells. It aired for three seasons on the CBS network from September 26, 1964, to April 17, 1967. The series follows the comic adventures of seven castaways as they try to survive on an island where they are shipwrecked. Most episodes revolve around the dissimilar castaways' conflicts and their unsuccessful attempts to escape their plight, with Gilligan usually being responsible for the failures.