One evening, Hammer gives a ride to Christina, an attractive hitchhiker on a lonely country road, who has escaped from the nearby lunatic asylum. Thugs waylay them and force his car to crash. When Hammer returns to semi-consciousness, he hears Christina being tortured until she dies. Hammer, both for vengeance and in hopes that "something big" is behind it all, decides to pursue the case.
Ralph Meeker
as Mike Hammer
Albert Dekker
as Dr. G.E. Soberin
Paul Stewart
as Carl Evello
Juano Hernández
as Eddie Yeager
Wesley Addy
as Lt. Pat Murphy
Marian Carr
as Friday
Maxine Cooper
as Velda
Cloris Leachman
as Christina Bailey
Gaby Rodgers
as Lily Carver
Nick Dennis
as Nick
Jack Lambert
as Sugar Smallhouse
Jack Elam
as Charlie Max