When a wealthy man (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.
On an island community off of California, Tom Stewart is preparing to marry the woman he loves. His plans are threatened by his old girlfriend, Vi, who shows up secretly. During a confrontation at the top of the island's lighthouse, the railing breaks and Vi falls. Tom has a chance to save her but doesn't. Tom's relief at Vi's accident soon fades when her vengeful spirit begins showing up wherever he goes...