Shortly after being assigned to work together, Muldoon and Halloran are called to the lavish New York Coliseum, where two young thugs who’ve just shot a policeman during a robbery have taken two sporting-goods clerks as hostages.
Muldoon and Halloran board the Staten Island Ferry to persuade an old friend, the ferryboat captain, to retire. A gang holds up an armored car carrying bank deposits, and the mob’s leader shoots a fireman in the engine room, where the two policemen are stopped at gunpoint.
After killing his first man in the line of duty, Halloran is overcome with remorse, made worse when his victim’s mother hysterically calls him a murderer.
An elderly friend of Muldoon’s ekes out his living by retrieving coins dropped through subway gratings, and has saved enough to adopt an eight-year-old orphan, but he’s turned down because he has no permanent residence.
After witnessing a man murdered by a gangster, a man is so shocked that he’s committed to a mental hospital. When he’s murdered to ensure that he won't testify in the case, Halloran is admitted to the hospital as a patient in an effort to find the murderer.
When a detective friend of Muldoon’s is killed on duty, his partner reports that he was shot while running away. Not believing his friend to be a coward, Muldoon gets the partner assigned to him during a stakeout designed to trap the killers, and finds out who the real coward was.
When a teenage gang member is killed during a street war, the detectives go to the dress factory where one of the gang members works, to persuade him to identify the killer. The boy clams up, and is later selected by his gang to murder the young man in revenge.
A robber attacks milkmen and dons their uniforms to gain entry to the homes of wealthy people away for the summer. After killing a policeman who’s discovered him, he takes refuge in a weather station in Central Park, armed with a shotgun.
After a man is murdered by gangsters, Halloran tries to protect the victim’s girlfriend, who’s the next target. He and the girl end up surrounded by four mobsters in a lighthouse on a small island.
A college student on the brink of insanity, after reading accounts of a frantic search for the killer of several young pregnant women, confesses to the murders. Released after police conclude his innocence, his mind cracks when he hears that the real killer has been found, and he tries to strangle a pregnant neighbor.
An extortionist forces a man to collect $250,000 from residents of fashionable Sutton Place, but the man decides to go to the police, though in doing so, he puts his son’s life on the line.
Police are skeptical of a woman’s story that she answered her phone and heard a lady being murdered. A reporter prints her story and she’s contacted by a young man whom she begins to date. When Muldoon learns some information that makes him believe the woman, he trails his lead to her suitor’s place of work, where he’s about to kill her after confessing to the murder she heard on the phone.
An officer is stabbed in a Christmas Eve liquor store stakeout with Muldoon, and Halloran is called in to hunt for one of the robbers, who escaped. The other thief refuses to disclose their hideout until he hears that his partner, his younger brother, was wounded before escaping.
Waking up in a hospital after almost being killed by her husband’s beating, a woman tells police that he’s planted a bomb on her father’s yacht. Halloran finds the man and kills him in a gun battle, while Muldoon manages to find the bomb two minutes before it blows up.
When an elderly sewer worker learns that his son is the leader of a street gang, he begs him vainly to reform, and then tells police about his association. When the gang uses the sewers to escape after a jewel robbery, the old man follows them into the underground passages.
A woman who’s been kept from marrying her boyfriend because they’re poor wins $1600 in the numbers game and tells her fiance she inherited the money. But when she goes to collect it, she’s badly beaten by a racketeer, and her fiance goes after him with a gun.
One of the most respectable people in Halloran’s neighborhood suddenly goes berserk and starts shooting shopkeepers and their customers. Halloran remembers that the man has taken some children on a picnic to Coney Island and trails him there to beg him to surrender.
Matty, a derelict who dreams of returning to his hometown on a white stallion, buys a horse after some $100 bills land in his lap. The money had blown away from a hood who had just murdered a man, and Matty is arrested for the crime, as his Bowery friends search for the killer.
When a patrolman is stabbed by a suspected murderer, his son, consumed with desire to be a policeman, unofficially takes over his father’s beat, against the pleas of Muldoon. He ends up gallantly wrestling the killer to the ground and holding him for the police.
A man is sought by police after his wife’s murder because his cigarette case was found in her apartment, but he believes the real murderer is an elevator operator whom he sets out with a gun to find.
When a teacher is found dead on the sidewalk below his third story classroom, Halloran poses as his replacement in the delinquent-ridden school, hoping to crack the case.
When police receive a phone call from a psychotic man annoucing he’s going to plant a bomb during a parade honoring an Olympic hero, Muldoon and Halloran are assigned to detect and stop him during the procession.
A bootlegger operating a still on Fire Island in the dead of winter against his partners’ wishes hires a killer to protect the operation. When the killer mows down a Treasury agent, Muldoon and Halloran track down the killer and close in on the bootleggers.
A poor Puerto Rican couple finds $10 and bets it on the numbers, winning $6,000. Upon depositing it at the bank, they find the cash is counterfeit, and the scared husband flees.
Muldoon and Arcaro are transporting a material witness to jail when a hitman known as “The Bumper”, because he uses a car as his weapon, forces the detective’s car into an oil truck. In the flaming explosion Muldoon is burnt to death. Heartbroken, Halloran makes an all-out effort to get the killer.
Halloran and Lt. Parker are assigned to guard a dictator’s young son during his New York visit, unaware that the boy’s own bodyguard has entered into a pact with two men to kill the boy at the same time as his father is being killed back home.
An alcoholic former All-American star who’s become a hustler for two card sharks is befriended by a boy who’s long worshiped him. When a man is killed in a fight over a card game, all clues point to the former star.
Halloran investigates when a woman convinces him that her husband’s imprisonment for manslaughter by drunk driving was unjust. He finds evidence that the man’s friend was actually driving, but the innocent man refuses to rehash the case.
Gangland’s most notorious killer guns down a mob boss who’s about to testify to the Senate, and in his escape takes Halloran prisoner.
A cleaning woman, tired of her hardscrabble life, robs a bank in an attempt to buy happiness.
Upon his Army discharge, a young man returns to his poverty-stricken neighborhood and finds his younger sister has been arrested for shoplifting, and the girl won’t reveal the identity of her gang.
A punch-drunk ex-prizefighter is convinced to help mobsters get rid of a dead body in the East River, and in doing so he kills a policeman who tries to stop him.
When a private eye is found murdered, police find he was mixed up in all sorts of crimes, but his wife insists he was a good man.
A gangster who went straight years ago to raise his daughter sees his last chance to make a haul to send her to college.
To find a little girl who’s feared kidnapped, Arcaro uses two lost bloodhounds, knowing that Parker, who hates dogs, would disapprove.
A theatrical agent’s ruthless drive for success led him away from every ideal he prized in his youth, and he is now receiving death threats from one of his many enemies.
A dealer in stolen goods, upset that his son-on-law wants to go straight, shoots the boy. Unaware that he’s still alive and has run off, the elder man identifies a dead body as the boy, raising police suspicions when the body is later identified as someone else.
An ex-boxer, needing money for his wife to enter his prize roses in a flower show, goes to his former manager, who gets an alcoholic ex-doctor to ensure that he can fight again safely.
With an innocent man about to die in less than a half-hour because of false testimony given by a gangster’s girlfriend, Halloran risks his job by going to her apartment and pleading with her to call the governor.
A crooked detective masterminds a box office robbery during a charity boxing event by forcing a prizefighter, a playboy, and the cashier to cooperate with him under threat of arresting them for previous crimes.
The only survivor survivor of a car wreck, Nora Condon, is brought in by the police. The driver was shot just before the crash and the other passenger was known as a gunman.
When a wealthy playboy and his girlfriend are found murdered in his apartment, police suspect the woman's husband of the crime. But he proves he was out of town at the time, and a discarded girlfriend of the playboy comes forward to confess.
The owner of a printing plant that burned down, killing his neighbor's wife and daughter, begs police for protection from the man, who, certain that he set the fire himself, is threatening to kill him.
A Wall Street financial expert who plays the horses is accidentally shot in the bookie joint. Afraid of jeopardizing his position, he refuses to allow police to extract the bullet and testify against the culprit. Then his daughter is kidnapped by thugs who want him to testify.
Trying to track down a psychopathic killer who's been stabbing patrolmen, police get a lead when they find a surgical knife along with a toy colonel figure with its head twisted off.
A gambler, indebted to a man in Italy who saved his life, marries the man's daughter so that se can enter America. Upon her arrival she finds him in big trouble with the underworld and she runs away.
After accidentally killing her playboy lover after finding he's dating her daughter, a divorcee persuades the girl to go along with her story that she was protecting her daughter from the drunken man's advances.
Police are baffled when jewel thieves kill a night watchman and steal a plastic replica of a diamond. The gang's using it so that their diamond cutter can practice to be ready when they steal the real thing.
Three hoods hold up a bar where Flint is making a routine check. Keeping his gun hidden to avoid injuries, he's branded a coward by newspapers after a protesting customer is killed by one of the thugs.
A loving, law-abiding family man is arrested one day after he massacres the crew of a cabin cruiser on the Hudson River. His wife and son must face the fact that he's secretly been a hitman for a gang lord.
A half-crazed artist, institutionalized by his cousin who arranged for a false death certificate, escapes during a period of lucidity and finds his uncompleted paintings have been finished by another artist and are about to make a fortune for his cousin in an art gallery.
Three men hold up an armored car and escape into the Bronx, followed by police. They take refuge with the aunt of the gangleader, whose personality starts to disintegrate as he relives his unfortunate past.
When a man electrocutes his partner as they're wiretapping the phone of a member of a financial combine, his bail is arranged by a senior partner in the firm, whose actions lead to death for his partners.
After meeting a model, a man decides he needs some quick money to divorce his wife. Learning of a fur coat exhibit in a local hotel, he maps out a robbery plan which should net him $250,000.
When a parolee discovers a corpse in a parked car in his service station, he panics and throws the gun he bought for protection into a passing truck. When he's later suspected of the crime, that gun is the only evidence that can prove his innocence.
When a hostess at the Tango Dance Palace reports a co-worker has been missing for three days, the owner tells police he’s never heard of the girl. After investigating the man’s past, Flint finds that the girl is in a private hospital after being beaten up by the psychotic man.
After a gun battle leaves the corpses of a policeman and an unidentified man, police find that the policeman was actually a woman in disguise, and the man an ex-Nazi SS officer.
When an old night watchman, patriarch of an Italian family, is killed during a waterfront robbery, his family swears vengeance on the killers, refusing to cooperate with police.
An unemployed actor, behind in his rent and locked out of his room, robs and strangles three cab drivers, leaving behind a script which Flint’s girlfriend recognizes is from an off-Broadway play.
Four young men are stabbing vagrants to death and leaving swastikas nearby, a clue to their identities which goes unnoticed by police until the men, dressed as Nazis, stage a parade behind a tenement house.
After four bad marriages, a machine-like man finally weds a woman for whom he feels real affection. When she dies in childbirth, his mind snaps and he uses a gun to get the $3,000 he feels he owes the doctor.
Flint and another detective are sent to L.A. to extradite two brothers wanted for murder in New York. The psychiatrist from the orphanage where they were raised vainly tries to fight the extradition. Upon leaving the court, one of the men kills a guard and escapes.
A gangland syndicate headed by a lawyer has been collecting protection money from a couple who own a restaurant. They decide to fight back by hiring a strongarm man to free them from the extortion ring.
Separated from their granddaughter during the Revolution, a Hungarian couple hire a man to find her, and they learn that an honored member of the community gave information to the enemy that led to the massacre in which their son was killed.
After quarrelling with his wife, a chemistry professor goes out and gets drunk. He fills an empty whisky bottle with nitroglycerin, planning to blow up his wife and his home, then loses the bottle. When he sobers up, he goes to the police, who begin a frantic search for the bottle.
A South American revolutionary, seeing that a Bowery bum is a dead ringer for his country’s legendary hero, whisks the derelict away to sober him up and use him to get backing for his planned coup.
A lonely young woman joins an escort service and meets a man who leads her to believe he wants to marry her. Horror-stricken when she learns he’s already married, she stabs him and then wanders around the city.
Seven business executives, holding a conference aboard a fishing ship, are overtaken by a gangster and his mob, who demand their wives pay a ransom for their safe return.
When a plant guard is killed, a recently fired man and his son each claim they accidentally killed him. Police don’t know who’s covering for whom, but the guilt shifts when they find some industrial diamonds have been missing since the murder took place.
With several conventions in the city, all the hotels are occupied, and a visitor who’s had too much to drink collapses on the train steps, where he was told he could sleep. A private policeman hired by the city beats him to death and steals his money.
When a wealthy couple uses up their money, they make a plan with their maid: she “borrows” jewelry from their party guests, they pawn it and invest the money in quick-profit stocks, then return the jewelry before police are called in.
After escaping prison by informing on his wife’s brother, who’s sent up for the robbery they committed, Paul Delito’s wife leaves him, vowing to teach their son to curse his father for snitching. The only thing sustaining Delito is the hope of winning forgiveness, and when his brother-in-law is later released and in hiding after committing murder, he seeks out the man to plead for his pardon.
A young man, whose soul has been sickened by his grandmother’s tales of chivalry, uses an old dueling pistol to shoot a man who has been fighting with his girlfriend in Central Park. While detectives search for the unknown sniper, he wounds another man and attacks his sister’s boyfriend.
A gang leader arranged for an elderly man to be smuggled into the country in a coffin, and he’s carrying a candy jar full of heroin. The hearse collides with another car and the old man wanders off into a strange new world, unaware that the gang is out to kill him before he talks to police.
After six months in a sanitarium, a garment tycoon returns to his firm and decides to destroy the lives of his associates. After announcing that he’s closing the place, he’s found shot to death, and police can’t find a clue to determine whether it was murder or suicide.
A small boy’s governess tells Parker of severe marital discord in the home where she works, and that during the couple’s last fight, she heard gunshots. Laying suspicion on the wife, the governess then runs into the husband’s arms, and he persuades her to help him kill his wife so they can be together.
A continual loser, whose wife has given up on him, begs for another chance. She plans the kidnapping of a small girl, demanding ransom from a wealthy stranger who tips police off to the crime.
A man sentenced to die for murdering a shopkeeper undergoes surgery for removal of a brain tumor. Upon recovery, he recalls nothing of his crime, and a retrial is ordered to determine his responsibility for the murder.
A young man who has frequent sadistic outbursts overhears his mother and her fiance discuss plans to take him to Bellevue for observation. In a rage he attacks the man, then disappears into the street, where he tags along with a young woman who angers him by befriending an elderly lady.
A wealthy man hires two men to filch a valuable statue from a museum, and they enlist the aid of three underworld men. After they steal it, the man dies before paying them, and they try to ransom it back to the museum.
A middle-aged man who’s fed up with his young wife’s infidelity pushes her lover out a window in a rage. Later when two women see him with a knife, unaware that he grabbed it when breaking up a street fight, they warn his wife that he’s going to kill her, and they call the police.
A forty-year-old nobody who wants to make himself known to the world causes a riot in the supermarket where he works by lowering prices to almost nothing. Threatening letters from cranks in the police file give Parker a lead toward identifying the man, who by now is at a fight arena threatening to detonate a huge explosive after a fight with his wife.
An old contract allows a retired postman to sail his sloop through an inlet near his home, and he decides to exercise that right -- but the old railroad bridge barring his way must come down, and the railroad company refuses to accommodate him, initiating a warrant for his arrest.
A former war hero, now a skid-row bum, is desperate to give his daughter a wedding gift, and robs a jewelry store. Flint tries to help him, but the man goes mad and embarks on a mass shooting spree in a hotel lobby.
Awakening to find his wife murdered, an artist runs to the psychiatrist who, two years ago, begged him to commit himself, fearing he’d someday kill her. Though the painter claims his innocence, the doctor tells the police, who then learn that a drunk may be responsible.
A lady doctor who helped raise a pharmacist’s son in a poor Manhattan neighborhood helps the boy and his wounded friend after they’ve robbed a store, and asks Parker to allow them time to turn themselves in.
Both the boyfriend and the foster father of a Chinese girl confess to murdering her, and police find they were both in love with her and involved in an arbitration with their community as to who could marry her.
Afraid of losing his son, who’s failing in school, a gangster introduces the boy’s teacher to a beautiful woman, and after he falls in love with her, threatens to take her away from him if he doesn’t pass his son.
When two young hillbillies stop their jalopy for a traffic light, Arcaro calls their attention to a loose license plate, and one of them pulls a gun and shoots him. They then embark on a robbing and killing spree.
Trying to keep his wife’s affair a secret from his neighbors, a well-liked trucking company owner protects her lover’s identity after the man injures a young girl while trying to run him down.
After stealing from his job to pay his mother’s medical bills, a man is convinced by the woman who loves him to spend all the remaining money on himself before turning himself in the next day.
A patrolman, crushed by his inability to curtail his wife’s spending habits, is in an ugly mood at the station, and is feared to have lost control when he’s absent from his beat and his son hasn’t returned home from school. Orders are given to take away his gun.
A professional killer, being hunted by both police and mobsters, forces a compulsive gambler to help him raise enough money to flee the country. The gambler’s girlfriend alerts police to what’s going on.
A man who grew up in an orphanage meets a twelve-year-old girl, whose wealthy parents have no time for her, each day in the park to share their lost dreams. A woman whom he’s spurned tells detectives that he’s been molesting the girl.
A Burmese sailor, brother of four boys who drowned when a man refused to steer his freighter off course to save them, comes to New York to kill the captain, but mistakenly kills his wife in a dark hallway.
After serving a five-year term for killing a man to save his old Army buddy’s life, an Indian comes to New York to fulfill a pact they made to buy some land and live on a ranch, but finds his friend is a mob hitman.
The agent of a successful, married actor goes to an ambitious actress to beg her to stop seeing his client, and gets so infuriated that his heart gives out and he falls to his death down a flight of stairs.
To avenge an old betrayal, three elderly Rumanians stage a mock robbery as rehearsal for a bank theft, but police are alerted to their activities when the real theft is about to take place.
A sculptor alerts police when he’s threatened by a foreign patriot for refusing to destroy his unfinished statue of a hero who’s now a vicious tyrant.
Police are puzzled by the apparent relationship between three elusive men -- an exemplary employee of a brokerage firm, a Bohemian poet, and the head of a local mission.
