The brilliant biochemist Helen Reynolds ingests the brain fluid of a serial killer as part of a self-experiment. She hopes to discover the secret behind the killer's ability to psychically control his victims.

A tiger shark bred by the Navy as a killing machine is wreaking havoc in the sleepy tourist town of Hampton Bay.

Maggie and her husband Richard are both college professors and have a daughter, 17-year-old Jenny. Their marriage is falling apart, and when Richard admits to having an affair with a student at the college they both work at.