Gilligan's Island (1964)

S3E15 Gilligan Goes Gung-Ho

Title: Gilligan's Overzealous Adventure Plot: Gilligan is appointed as the deputy sheriff and becomes overly enthusiastic about his new role. In his eagerness, he imprisons all the castaways in a makeshift jail, inadvertently locking himself inside as well! Just as they find themselves trapped, a rescue plane soars overhead, missing the opportunity to save them.