Freelance photographer Cliff Wilder (Robert Stack) finds himself the target of various colorful villains in this quest for an ancient Chinese treasure when he accidentally acquires the key to its location, the Peking medallion.

Someone is killing people related to a South American expedition. The means of murder are poison darts with rubber spiders attached to them. A writer and some police detectives investigate.

A womanizing poet falls into the hands of a psychiatrist with a straying wife.