The Doorway to Hell (1930)
A vicious crime lord decides that he has had enough and much to the shock of his colleagues decides to give the business to his second in command and retire to Florida after marrying his moll. Unfortunately, he has no idea that she and the man are lovers.
Directed by: Archie Mayo
Starring: Lew Ayres, Dorothy Mathews, Leon Janney, Robert Elliott, James Cagney, Kenneth Thomson
Links: IMDb, Movie posters, Movie stills