A pair of NYPD detectives in the Narcotics Bureau stumble onto a heroin smuggling ring based in Marseilles, but stopping them and capturing their leaders proves an elusive goal.

A gun-fighting stranger comes to the small settlement of Lago and is hired to bring the townsfolk together in an attempt to hold off three outlaws who are on their way.

William Friedkin's gritty police drama portrays two tough New York City cops trying to intercept a huge heroin shipment coming from France. An interesting contrast is established between 'Popeye' Doyle, a short-tempered alcoholic bigot who is nevertheless a hard-working and dedicated police officer, and his nemesis Alain Charnier, a suave and urbane gentleman who is nevertheless a criminal and one of the largest drug suppliers of pure heroin to North America. During the surveillance and eventual bust, Friedkin provides one of the most gripping and memorable car chase sequences ever filmed.

John Shaft is the ultimate in suave black detectives. He first finds himself up against Bumpy, the leader of the Black crime mob, then against Black nationals, and finally working with both against the White Mafia who are trying to blackmail Bumpy by kidnapping his daughter.