Una sull'altra

A recent widow has invited a group of family friends to her large and secluded country home. However, what the guests don't know is that the reason they've been assembled is that their host suspects one of them might be her husband's killer and she's intent on uncovering the identity of his murderer. As the guests begin to suspect each other, revealing long-kept and sinister secrets in the process, an unknown, black-gloved killer begins bumping them off in a variety of nasty ways.

Roberto, a drummer in a rock band, keeps receiving weird phone calls and being followed by a mysterious man. One night he manages to catch up with his persecutor and tries to get him to talk but in the ensuing struggle he accidentally stabs him. He runs away, but he understands his troubles have just begun when the following day he receives an envelope with photos of him killing the man. Someone is killing all his friends and trying to frame him for the murders.

When New York is caught in the grip of a sadistic serial killer who preys on patrons of the city's underground bars, young rookie Steve Burns infiltrates the S&M subculture to try and lure him out of the shadows.

A tourist witnesses a murder and finds herself caught up in a series of bloody killings.

A fashion designer gives a private showing at her mansion over a weekend, but someone starts killing off the models.

In the ravaged near-future, a savage motorcycle gang rules the road. Terrorizing innocent civilians while tearing up the streets, the ruthless gang laughs in the face of a police force hell-bent on stopping them.

When a beautiful young Grace arrives in the isolated township of Dogville, the small community agrees to hide her from a gang of ruthless gangsters, and, in return, Grace agrees to do odd jobs for the townspeople.

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.

Two rival bikers gangs, the Victors and the Six-Six-Six's, refuel their decades-old rivalry.

A newsman works with a blind puzzle-solver to uncover a deadly conspiracy linked to a genetic research facility.

An all-female motorcycle gang, called 'The Maneaters' hold motorcycle races, as well as terrorize the residents of a small Florida town, and clash off against an all-male rival gang of hot-riders.