He gave an overdose of drugs to his wife

This Academy Award host was probably more famous for acting on the radio than in films.

He also gave an overdose of drugs to his wife which killed her because he wanted to marry his co-star who ended up with a celebrity offspring of her own but not with the subject of the blind.

Bob Burns
Wife: Elizabeth Fisher
Co-star: Judy Canova
Co-star’s celebrity offspring: Diana Canova