Friday and Smith are assigned to investigate the strangulation of an unidentified woman in a hotel room. With no leads and no clues, and no idea of who she is, they must start from scratch to find her killer.
Friday and Jacobs question a jeweler regarding the robbery of a colleague. The man takes offense at being questioned about the incident, but as the detectives begin to amass evidence, the jeweler's outrage quickly begins to lose credibility.
A man is found dead in the gutter. At first it seems as a hit-run case, but Friday and Smith become suspicious when all witnesses from the night before give exactly the same story. Usually witnesses are at variance in some respects.
Upper middle-class teenagers in Los Angeles are going crazy. They trash a movie theater, beating up the manager and pushing a young man through a plate glass window. Sergeant Friday must get to the bottom of what is causing this to happen.
When two four year old twin girls turn up missing, Sgt. Friday and Officer Smith are called in. The girls are found, but were molested. The officers continue to investigate until they locate the perpetrator.
Three men are the suspects in the beating death of a former vaudevillian actress found in her apartment. The possible reason for her murder could be among the contents of an old steamer trunk which she kept locked in her room. Surveillance equipment is used to solve the mystery.
The detectives try to track down a tall, beautiful woman who has been terrorizing the city by robbing men, beating them up and in some cases shooting them. Their job is made more difficult by the fact that there are many inconsistencies in the victims' reports.
Friday and Smith receive a bulletin about an armed four-man gang, two of whom are army deserters, who have committed a series of robberies and auto thefts in San Francisco and are on their way to Los Angeles.
A holdup man is sticking up bars. After he takes the money he kills many of his victims. Sargeant Friday has few leads other than that the holdup man likes a certain song on the jukebox and likes to drink scotch and water.
A truck kills an old lady and her little grandson at a crossing and drives away. The owner of the truck asserts that he let a man called Paul lend the truck for one hour, but he doesn't know the last name of this man or where he lives. The police must investigate all circumstances, but should Fri...