How Did Dwayne Hickman Die?

Dwayne Bernard Hickman was an American actor and television executive, producer and director, who worked as an executive at CBS and had also briefly recorded as a vocalist. Hickman portrayed Chuck MacDonald, Bob Collins's girl-crazy teenaged nephew, in the 1950s The Bob Cummings Show and the title character in the 1960s sitcom The Many Loves of Dobie Gillis. He was the younger brother of actor Darryl Hickman, with whom he appeared on screen.