A former top mob assassin is lured out of retirement by the opportunity to kill a kingpin for his 13th hit.

An old, but vibrant, man is shuffled off to an "Elderly Citizen's" home by his wealthy son. Both to get his son's attention and amuse himself, the man begins to make threatening crank telephone calls. A fellow resident, a retired cop, overhears him doing this and begins to blackmail his "friend".

An acting class prank gone tragically awry leads the detectives to look closely at a talented but emotionally-tortured student.

The detectives try to build a case against a womanizing con man who manipulates lonely maids in order to gain their confidence and burglarize the homes of their wealthy employers. Flint is bothered by having used one woman's private diary in order to locate the man, and she is more bitter with the police for this than she is with the suspect for using her.

An ex-con, hustling a living by being part fence, sports bettor and police informant among other things,has a contract out on his life. He scrambles to get enough money together to leave for Oklahoma and a reunion with his wife and son. Lt. Parker is sympathetic and tries to help his "stoolie" friend safely leave NYC.

A hot dog, newspaper headline-grabbing detective has himself assigned to the 65th Precinct to find the killer of his partner. Both Lt. Parker and Det. Flint soon find that this brash and rash detective gets under their skin. He challenges their bravery and considers them to be safety first "parade cops".