Mary Logan is accused of murdering a blackmailer. She is innocent but waiting on death row. Lionel Atwill plays the criminologist who must figure out whodunnit before Mary gets executed.
When a wealthy man (Lionel Atwill) is threatened by a killer known as The Gorilla, he hires the Ritz Brothers to investigate. A real escaped gorilla shows up at the mansion just as the investigators arrive. Patsy Kelly portrays a newly-hired maid who wants to quit because the butler, played by Bela Lugosi, scares her.