Three young hobby archeologists witness a satanic ritual in a secluded villa. Instead of helping poor female victims they decide to secretly document the events.
A corrupt cop steals evidence of a Mafia drug ring with plans to sell it to their rivals, but is hunted by the mafia and government agents.
A gang of robbers takes possession of a load of diamonds.. Only one of them, Mark Lemmon, is arrested and sentenced to life imprisonment. But before being captured, the gangster had managed to hide the loot in a sewer. Five years later, Mackenzie, an insurer, pretending to be a mafia boss, assigns three petty criminals to arrange his escape. Once free, Lemmon finds the booty but now he has to deal with his new 'partners'.
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...
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.
In Genoa, the Commissioner Sironi has identified the leader of the ferocious racket that controls the port activities. But the law restrains his action.
A Milan pimp faces off against a ruthless and greedy French gangster whom wants to unite organized crime in Italy.
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 tough, violent cop who doesn't mind bending the law goes after a machine-gun-carrying, hunchbacked psychotic killer.
When mobsters try to put an honest policeman on the payroll, he seeks revenge on the mob. But, he soon learns that his actions, however honest, have dire consequences.
A detective sick and tired of the rampant crime and violence in his city, and constantly at odds with his superiors, is finally kicked out of the department for a "questionable" shooting of a vicious criminal. However, he is soon approached by a representative for a group of citizens who themselves are fed up with what they see as criminals going unpunished, and they make him an offer he may very well not refuse.
In a crowded hotel in the center of Milan a bomb has been planted. The time device on its detonator has only minutes to run. A young detective discovers the bomb by accident and is drawn into a terrifying nightmare of intrigue, brutality and ruthless killing. This is a world where human life is sold or sacrificed for twisted ideals. A world of international terrorism. The time is now.
An Ottawa police captain searches for the person who poisoned his sister, who was attending the university in Montreal. So desperate is he for revenge that he begin to use his own brutal methods to find the killer. Soon he discovers that not everything is what he thought it was.
Cliff works as a narcotics investigator for the police and infiltrate a mafia gang. Soon it turns out that Cliff has bigger plans than just to bust bad guys.
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.
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.
Carlo, a young photographer, is making love with his girlfriend at the beach when he witnesses a murder being feebly staged to look like a car accident. Carlo takes incriminating shots of the murderers (the victim turns out to be the local public prosecutor) and attempts to sell them to various interested parties, including a gangster and a newspaper owner. One of the murderers' accomplices, a lowlife criminal, is gunned down by a black-gloved assassin, while another is stabbed to death...
When private detective Bob Martin looking for a stolen diamond necklace, he also has a clever serial killer on the trail ...
The mysterious Tronche is being escorted to a castle in France. However, during a stop at a motel, he is attacked by Don Lewis who adopts his identity. The castle is the secret hideout of drug-pushing gang. Two of the crooks are killed by an unidentified assailant. While the false Tronche, Jean (head of the gang) and Pierre search the place for the murderer, Jean's lover is killed too. The four survivors are trapped because they are in hiding from the police...
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.