Edward Platt(1916-1974)

Platt's death was originally reported as a heart attack at age 58. However, one of his sons confirmed that Platt committed suicide in 1974 after two previous attempts while suffering from an undiagnosed and untreated depression that was further sparked by financial troubles. It is also said that Platt's Superagente 86 (1965) co-star, Don Adams, knew the real cause of death.