The French Connection-Gene Hackman, Roy Scheider-1971 IMDb 7.7/10

Popeye Doyle and Buddy Russo get wind of a big shipment of heroin and begin a tail of the suspects, and their French Connection, two French nationals who are the european link. As money troubles begin for the hoods they decide to kill Popeye and Buddy to give them enough room to bring in the heroin. A combination of police procedural and action/car chase.