In the Post-World War II, in Los Angeles, a criminal shots and kills a police officer in the middle of the night. Without any leads, the chief of the LAPD assigns Sgt. Chuck Jones and Sgt. Marty Brennan to investigate the murder and apprehend the culpr...

Jim Ackland, who suffers from a head injury sustained in a bus crash, is the chief suspect in a murder hunt, when a girl that he has just met is found dead on the local common, and he has no alibi for the time she was killed.