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.
Friday and Smith search for a missing boy. The first sign that the case is serious is when blood is found. Further probing reveals the boy's parents had purchased him a .22-caliber rifle for Christmas -- and the weapon is missing, removed from its wrapped package.
Gordon Miller, a young pianist, is found near an abandoned freight car holding the dead body of a woman in his arms. He claims he has killed her. Called to interrogate him, Friday and Smith remain skeptical.
Friday peruses the elusive armed robber Mark Hoffman after the man repeatedly escapes from both State and military prisons. Can Friday convince the man to surrender or will he go down in a hail of bullets.
Henry Wilson, a Hollywood movie director, has been killed by a falling arc light. Was it really an accident? To answer this question, Friday and Smith go Hollywood with a wonderful excuse to visit the studios. But the two men do not fail to mix business with pleasure and they will wind up solving the mystery.
Joe Friday's old friend and his wife suspect their son is using drugs so they ask the police sergeant to look into it as a favor. As Joe and his partner check it out they suspect the son is also a dealer.
An elderly widower is missing, so Friday and Smith retrace his actions before his disappearance. Things point to a long vacation until the story of Mrs. Banner, who rented the man's house, doesn't add up.
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.