Jack Williams was the best friend of Vietnam veteran and detective Mike Hammer. When Jack is murdered, Mike makes it his business to solve the crime. He is helped by his secretary Velda, and partly helped, partly hindered by the Chief of Police, Pat Chambers. On the trail of the killer, Mike discovers government conspiracies, and plots used by the CIA and the Mafia.

Armand Assante
as Mike Hammer

Barbara Carrera
as Dr. Charlotte Bennett

Laurene Landon
as Velda

Alan King
as Charles Kalecki

Geoffrey Lewis
as Joe Butler

Paul Sorvino
as Detective Pat Chambers

Judson Scott
as Charles Kendricks

Barry Snider
as Romero

Julia Barr
as Norma Childs

Jessica James
as Hilda Kendricks