Ring Around Gilligan

Ring Around Gilligan is the 77th episode of Gilligan's Island and the ninth episode of the third season. It aired November 7, 1966.

Synopsis
Dr. Balinkoff returns to the island and uses rings to control the minds the castaways to rob Fort Knox!

Trivia

 * It's never revealed how Balinkoff got his body back after the events of The Friendly Physician; many fans suggest the episodes work better in reverse order.
 * This is possible the most sinister and dark episode in the series as it has Balingkoff planning to brainwash the Castaways into committing crimes for him against their will.

Quotes

 * Balinkoff: "Scientist, yes... mad, no!" (followed by creepy laughter)