Bullitt (1968)

An all guts, no glory San Francisco cop becomes determined to find the underworld kingpin that killed the witness in his protection. - Mystic80

San Francisco Police Lieutenant Bullitt's tasked by ambitious Walter Chalmers, to guard Johnny Ross, a Chicago mobster who's about to turn evidence against the organisation. Chalmers wants Ross' safety at all cost, or else Bullitt will pay the consequences. - Huggo

Frank Bullitt, a police detective who works for the San Francisco Police Department, is assigned to protect a witness for 40 hours, issued by the ambitious politician, Walter Chambers. Before the night is over,two hit men break into the witness's room and kills him and wounded a police officer. Knowing this, Bullitt gather up information about the incident and opens up a investigation on his own after his police captain gives him the permission to investigate the crime. When Bullitt opens up the investigation, people around start to ponder about his behavior and his antics on pursuing those who are responsible of the crime. - blazesnakes9

Senator Walter Chalmers is aiming to take down mob boss Pete Ross with the help of testimony from the criminal's hothead brother Johnny, who is in protective custody in San Francisco under the watch of police lieutenant Frank Bullitt. When a pair of mob hitmen enter the scene, Bullitt follows their trail through a maze of complications and double-crosses. - Jwelch5742

Lt. Frank Bullitt is selected by Walter Chalmers, a politician with ambition, to guard a Mafia informant. Bullitt's friend and underling is shot and the witness is left at death's door by two hit men who seemed to know exactly where the the witness was hiding. Bullitt begins a search for both the killer and the leak, but he must keep the witness alive long enough to make sure the killers return. Chalmers has no interest in the injured policeman or the killers, only in the hearings that will catapult him into the public eye and wants to shut down Bullitt's investigation. - John Vogel

A no glitter, all guts cop named Frank Bullitt - with two other cops - is assigned to what seems like a normal case: to watch a witness for 48 hours before he goes to trial on Monday. When one officer and the witness are injured, Walter Chalmers gets angry at Bullitt. After he chases the hit-men that shot them, he vows to catch them, and the mafia boss that hired them. - Chase Ard