Harry Orwell is a LA cop who is retired due to a bullet in his back. Now a Private Detective, Harry O. is hired by the man who shot him to find the other man who was involved in the shooting. Scheerer is trying to kill Garrison and also keep his heroin business alive. Harry O. wants to bring both to justice. First Pilot movie.

Harry tries to find out what happened to an AWOL sailor, his only clue being a single shoe mailed to the man's sister, who sells her furniture in order to hire him.

Harry tries to protect an abrasive architect who refuses to believe that someone is trying to kill him after he witnessed a murder.

When a girl is found shot to death, Harry's simple divorce case turns into a murder investigation.

Manny Quinlan, Harry's old friend on the San Diego police force, is murdered when he comes to Los Angeles to take his addicted niece back home.

When Lt. Trench is framed for the murder of an informant, Harry tries to help him by masquerading as a drug pusher.

Young criminologist Lester Hodges returns and teams up with his college mentor to find out who is systematically killing off members of Lester's family.