How Did Peter Kastner Die?

Peter Kastner was a Canadian actor who achieved prominence as a young man in lead roles in the popular 1964 film Nobody Waved Good-bye and in Francis Ford Coppola's 1966 well-received comedy You're a Big Boy Now. He also had a leading role in another film as a young man in 1971 and in a sequel of his debut film in 1984. Additionally, he starred in two short-lived television situation comedy series of 1968 and 1977.