***SPOILERS*** The dark past catches up with SFPD Let. Det. Mike Stone, Karl Malden, when crazed psycho rapist murderer Lenny Cord, Jo Don Baker, is released from prison for good behavior. Planning to get revenge against Det. Stone for putting him behind bars for 12 years Lenny is now planning to kidnap his daughter Jeannie, Darleen Carr, and do to her what he does best: Rape & murder Jeannie. In fact to show that he means business Lenny murders Jeannie's best friend fellow collage student Valarie Mercer, Julie Mannix, who was on the same bus that Jeannie was on to make, at the end of a knife, his point!
The usually cool Det. Stone almost blows the case in blowing his top and attacking and punching out Lenny, who's about a half foot taller 50 pounds heavier and 20 years younger, in the police station in front of some dozen witnesses! But it's Lenny who screws up by planning to murder Let. Stone, whom he was after the entire time, and ending up getting winged, shot, by him instead.
***SPOILERS*** Helpless from Stone's gunshot wound and begging to be put down, killed, all Det. Stone does and smiles at the pathetic Lenny Cord as the police show up to cart him away in their meat wagon to spend the rest of his natural life behind bars in San Quentin prison where hopefully for Det.Stone he'll serve along long time and in good health and in solitary confinement far and away from any human contact.