Basil Rathbone is a very wealthy man, until it turns out he isn't; there's a lot of fraud, so he winds up going to Devil's Island. His wife, singer Sigrid Gurie, is kept in thrall, with sidekick Victor McLaglen keeping an eye on her. But drunk Robert Cummings falls in love with her and she with him. She's still loyal to Rathbone, so Cummings goes far away and reforms. Meanwhile, Rathbone learns of the incipient affair, and escapes from Devi's Island, and heads to where Miss Gurie is performing, and Cummings -- in a pencil-thin mustache -- is hoping.
Rathbone is magnetic as the scheming dirtbag, sharp and sardonic and manipulative. Miss Gurie sings three sings, and Cummings plays his role adequately. McLaglen is very god, and there are some nice bits by Billy Gilbert, Leo Carillo, and Irving Pichel.