Holbrook and his aides are assigned to investigate a murder involving a trio of safecrackers.
Matt and Chris are returning from a fishing trip via a small shuttle airline. They're jolted back to business when two gun-wielding thugs named Krom and Daniels take control of the plane.
The waitress Molly (Jean Allison) probably knows where the escaped gangster Frankie is. Sergeant Chris Ballard (Mark Goddard) tries with a little tenderness to get the girl to talk. Unfortunately he is unlucky. Then Sgt. Chris Ballard gets into the hands of the sadistic gangster Frankie Anderson. In a bar, the crook keeps several people and Ballard at bay. Capt. Matt Holbrook sneaks into the bar...
Holbrook finds Detective Sergeant Nelson engaged in a very un-policemanlike activity, he is reciting his own poetry at a beatnik coffee house.
Eleanor Curran overhears part of a telephone conversation between two men plotting a murder. She contacts the police, but Holbrook is stymied when she can't identify the men or their intended victim.
Four students from Wellington Prep School are getting a few kicks by swiping a convertible from a garage. But at the last minute a watchman sees them -so they boys run him down.
