Michael considers himself a genius criminal and plans the big coup. He forms three new gangs who know nothing about each other and each only know part of his plan. In the background Michael pulls the strings and mercilessly plays the actors on his stage against each other. This strategy also poses unsolvable problems for the police until something goes wrong and the house of cards collapses.
Sadistic no-count killer Nanni Vitali and three other equally brutish hoodlums escape from prison. The foul foursome embark on a savage rape, murder, and robbery spree. Vitali even abducts and defiles frightened hapless lass Giuliana Caroli. Meanwhile, rugged police inspector Giulio Santini is determined to bag the despicable Vitali.
A Milan pimp faces off against a ruthless and greedy French gangster whom wants to unite organized crime in Italy.
Sandro, a detective, finds his wife strangled. His girl-friend Tiffany, who works as photographer, makes a "Blow up" from a photo, what Sandro finds beside the victim. Sandro and Tiffany are looking for the woman on the photo, Laura. They finds her in a Night Club in Rome...
A tough, violent cop who doesn't mind bending the law goes after a machine-gun-carrying, hunchbacked psychotic killer.
An ill-assorted group of international criminals executes a tightly-planned ransom sting in Spain. Things go along swimmingly until various tensions within the group come to the fore.
After his younger sister is poisoned, a tough Ottawa cop embarks on a violent journey through Montreal to find her killer, which turns into a whirlpool of revenge and betrayal.
A young man, accused of murder and theft, escapes to Venezuela. His fiancée and her brother join him, only to find he had the loot with him. But was he guilty?
An ex-Vietnam vet is forced to become a hit-man and gets caught in the middle of a conspiracy.
By day, Ovidio (Joe Dallesandro) and his two friends work at a data center. After work, they blow off steam by committing random acts of savage violence, swiftly graduating from sparking a riot at a football game to vehicle theft, rape, and murder. The police are convinced this recent spate of crimes is politically motivated, but world-weary veteran Commissario Santaga (Enrico Maria Salerno) suspects a far more terrifying explanation: that these young men are motivated by nothing more than boredom and disaffection at civilized society. As Ovidio's behavior escalates, a psychological game of cat-and-mouse ensues between the two adversaries, building towards a shocking final confrontation.
When a crime boss is murdered while in hospital, a young woman sees the killers, but her room mate convinces her not to tell the police, fearing the consequences. Unfortunately the murderers realize that they have been seen, and kill both women. Catching the killers proves difficult as anyone who knows anything dies in unexplained circumstances. It becomes evident that a large and powerful criminal organization is behind the murders, and that they have links within the police force. It is up to Lt. Carmine to see that justice prevails, using any means necessary.
A man's daughter is killed by thieves during a bank robbery. Due to the incompetence of the corrupt authorities, he decides to take to law into his own hands and track down the killers.
A drug deal goes bad and the heroin is stolen. One mob boss doesn't have his drugs and the other doesn't get his money. People are going to die until they discover who double-crossed them. Into this backdrop, Inspector Dario Mauri arrives from Milan to help clean-up Naples. His mission – find the drugs and stop the killing.
After a phone call has been intercepted (an industrialist is going to receive a huge amount of money from a foreign bank), Mafioso Luca Albanese is assigned to set up a big robbery. He and his gang (three men and three women) then hide-out in a remote mountainous region, but soon at each other's throats. Moreover, someone is killing Albanese's men one by one, leaving white paint on the victim's faces...
During an outbreak of violent murders in the area targeting young women, a journalist searching for a female friend gone missing ends up in a villa owned by an eccentric photographer.
When private detective Bob Martin looking for a stolen diamond necklace, he also has a clever serial killer on the trail ...
Detective Baldassarre spends his forced exile sorting criminal records. He gets a chance to return to the line of fire when two people, an aristocrat and a worker are struck by lightning inside a fancy mansion. The incident would be relegated to freak accidents, but Baldassare's attention is drawn to the strangeness of the events and he begins to investigate.
A police captain arranges the release of a criminally insane prisoner, who soon winds up dead. When the District Attorney takes on the case, he uncovers corruption in the department and vows to take down the man who's responsible.
When a crime boss sends out his thugs to terrorize an entire city, they do whatever they want, which includes anything from petty theft to robbing the police station in broad daylight. Napoli spara! (internationally released as Weapons of Death and Naples shoots) is a "poliziottesco" film directed by Mario Caiano in 1977. It is an unofficial sequel of Napoli violenta, of which reprises the character of Gennarino (still played by Massimo Deda).
A robbery at a nightclub goes wrong.