Eric Gorman, a wealthy and sadistic big-game hunter, harbors an extreme jealousy towards any man who shows interest in his beautiful wife, Evelyn. Gorman works at a zoo and uses his expert knowledge of exotic animals to devise gruesome methods for murdering his perceived rivals. The story begins with Gorman returning from an expedition, subtly hinting at his dark nature with the cruel treatment of an explorer he suspects of flirting with Evelyn. His suspicions deepen as Evelyn grows increasingly distant and uncomfortable with his sadistic tendencies, fearing for the lives of those around her.

As the plot thickens, Gorman's jealousy spirals into a deadly obsession. The tension builds when he becomes suspicious of Roger Hewitt, a zoologist who appears to be friendly with Evelyn. Determined to eliminate Hewitt, Gorman sets in motion a series of chilling and elaborate traps designed to look like accidental deaths caused by the zoo's wild inhabitants. Amidst the escalating danger, a reporter named Peter Yates takes an interest in the mysterious deaths occurring at the zoo and starts digging into Gorman's past. The suspense heightens as Evelyn and Yates put their lives on the line to uncover the truth about Gorman's sinister actions, leading to a gripping confrontation.