A little man with homemade bombs has been blowing up four or five gangsters at a clip. Now the mob boss' have hired Gunn to find the culprit.

Arnie Kelton musician and ex-convict, asks Gunn to investigate his wife's death.

A secretary has important papers that incriminate her boss and becomes frightened when attempts are made on her life, at least that's the story she gives Pete. The real story is that Lyles a bank robber offs two of his cohorts after looking for the key to the safe deposit book where the loot is.

John Alastair is a desperate man and has a problem, he has hired Burnett to kill him but changes his mind. Unfortunately Burnett doesn't see it that way.

Lt. Jacoby is kidnapped, Pete goes looking for him and finds suspects at every turn.

Matthew Dunaway is killed on a train and his briefcase is stolen. Gunn is hired by Lavinia to find a man she claims is her husband and to find what is in the briefcase.

Willie Coronado is found dead in the dryer of a laundry mat. He was one of the men involved in a daring bank robbery involving one million dollars. Louis hires Pete to find out who killed his partner and to cut a deal with the DA's office for his involvement.

Ventriloquist Marvelous Marvon is found murdered after his act. Gunn is hired by Marcel Benoit to the find killer. Rinaldo his Dummy, turns out to be no dummy.

There is an assassination plot against the Governor, and Pete tries to find out who is behind it to stop the scheduled assassination. The plot is a ruse for something even bigger as Jacoby and Gunn find out.

Bank Manager Poole places smoke bombs throughout the bank and then cleans out the bank.

Convinced that his wife is trying to kill him, comedian Danny Holland comes to Peter Gunn for help.

Pete is hired by trumpet player Bud Bailey's wife, she is accusing him of wanting to kill her for the insurance money.

Charlie Barnes is arrested for bank robbery and is cut a break to attend his daughter's wedding with Gunn as his watchman and then disappears.

Eric gets himself a trench coat and a pretty secretary. Now he's ready to start his career as he bumbles his way around town and interferes with the police department he is called in by Janos Thorwald to bring in his easy mark of a son.

Two thugs selling protection, if you don't pay for protection, you're blown up and permanently out of business. Gunn is hired by Mother when she runs into problems with The Owl.

A distraught father is worried about his daughter, Ellen Majeski, who did time for four years as an accomplice in a robbery. Now after her release she has disappeared and her father hires Gunn to find her. The twist is that her father died when she was 4.

Some jewels have been stolen, and an insurance man named Nickerman wants to pay the thieves to return them. So he hires Gunn to contact the crooks.

Nancy Fowler is murdered and Pete is hired to find out why. He finds that it's a setup for a bitter wife married to a wealthy older man to get his money.

An escapee from a mental hospital gives the Mayor an ultimatum, either commit suicide or a bomb will be detonated at the Civic Centre.

Two-thirds of this episode consists of a chase sequence without any dialog. Pete hears that he's marked for murder, but he refuses police protection. The killer finds Gunn alone in his apartment and forces him to take a nighttime ride into the desert.

Employee Arthur Cole accuses his boss of killing his wife and hires Gunn to prove it. There is a twist and it leads to the suspect being Cole instead.

Plainsclothes policeman Jay Madigan is found knifed on the docks near the carnival. Pete undercovers that the Shooting Gallery at the carnival is smuggling something in the dolls, heroin.

Paul Conlon, a school teacher, is grading papers at school when he hears a scream he goes to investigate and finds a dead girl. He hires Gunn to prove his innocence.

Gunn is hired by Mr. Copeland to find out who stole his antique crossbow and is using it to murder people.

Janos Kolanski, an inventor goes to Pete for help. Apparently there is a faction after his plans, his invention a deadly rifle.