The Man Who Cheated Himself - 1950 Lee J. Cobb

1950 film noir directed by Felix E. Feist and starring Lee J. Cobb, Jane Wyatt and John Dall.

Wealthy biotch Lois Frazer, divorcing her greedy, leering husband, Howard, finds a gun he had bought, probably intending to shoot her with it. She seizes the initiative and kills him with it in front of her new “beau-savant,” who is also a homicide detective with the San Francisco police. He also seizes the initiative and gets rid of the weapon the body, for he is a man in love and will do anything for his beloved, including ruining a career and risking a long stretch in the can. Problems ensue when he’s assigned to investigate the case, assisted, wouldn’t you know, by kid brother Andy, who is new to the homicide division and honest, brave, clean and reverent.