A young boy 'pays' Gunn to protect his father from unknown men who beat him up. After Gunn starts to investigate, the boy denies needing help, and when the father is found he denies having a son. The key to the case lies with the boy's 'Aunt and Uncle'.

An insurance company hires Peter Gunn to determine the ownership of $500,000 worth of jewels, which may have been stolen. They were discovered by the police in the apartment of a murdered man who's wife now has laid claim to them. Oddly, a bookie who cannot be found could figure in the solution of the case.

A ballet dancer hires Gunn to find her old dancing partner who has recently broken out of a sanitarium. He holds a grudge against her and before being committed he had threatened her life. The girl's new beau, a gangster, vows he will kill the "sick boy" if he finds him before Gunn or the police do.

A bank manager robs his own bank after disabling everyone with knockout gas. When the manager's co-conspirator escapes to Italy with the money, Gunn is hired to track the man down.

An old-style Mob Boss,who has recently returned from prison,hires Gunn to find out who wants him dead.His reason for wanting to know is more than it would seem.

A cab driver saves a woman from a beating and from being forced into a car by two thugs. Afterwards, she disappears while he goes for help. The cabby tells his friend Gunn about what happened and this leads into the search for a girl who is "trying to get lost". She is a witness against a top hood and is on his hit list.

A convicted man being escorted to prison via the train is freed by a confederate.The man's wife contacts Gunn-to hire him to recapture her husband.Due to him believing she tipped the police and caused his arrest,she fears her husband will kill her.

Back from Mexico,one of Gunn's "associates" tips him to a "suicidal type" woman. Gunn ends up saving her life and then pursues the case out of curiosity. Finding and saving her a second time, Gunn is shot. Afterward, a punk hood tied to the woman turns up missing and Jacoby investigates the lady.

Cliffie Thomas hires Pete to protect him from recently convicted and even more recently escaped Al Brenners. Cliffie was blinded 10 years ago by Brenners and Vic Stringer. The police think Brenners left town, but Cliffie knows otherwise because he knows Stringer has visited his newsstand a couple times. Cliffie figures Brenners and Stringer will kill him because wherever Stringer is, Brenners can't be far away. Peter Gunn is Cliffie's key to remaining...

A prisoner brought to court for sentencing somehow has gotten a gun and kills the judge before being killed himself.Lt. Jacoby is assigned to investigate the case and his interested friend Peter Gunn helps by using his network of informants.