Syndicate Sadists (Italian: Il giustiziere sfida la città, or "The Executioner Challenges the City"), also released under the titles Rambo's Revenge and Final Payment, is a 1975 poliziotteschi film directed by Umberto Lenzi.

Milián plays Rambo, an ex-cop who seeks revenge against two powerful crime families who were responsible for the murder of his friend.

[3] Ida Galli took a role in the film when her real-life son Alessandro Cocco was cast as a kidnap victim.

[3] It was released in the United States titles Rambo's Revenge and on home video as Final Payment.

[1] The unrated American DVD of the film is missing two minutes of footage: a scene where the mother of the kidnapped boy comes home and Paterno's henchmen searching for Rambo in a pub, and two reaction shots.