Parklane Pictures Inc.

A doomed female hitchhiker pulls Mike Hammer into a deadly whirlpool of intrigue, revolving around a mysterious "great whatsit".

Dectective Mike Hammer is determined to catch and kill the person who shot his close friend dead, so he follows clues that lead to a beautiful, seductive woman.

An amnesiac finally learns his true identity...as a murder suspect. And he doesn't even know whether he is guilty...