Serpico

Serpico is a 1973 American crime drama film directed by Sidney Lumet and starring Al Pacino in the title role. The screenplay was adapted by Waldo Salt and Norman Wexler from the book written by Peter Maas, with the assistance of its subject Frank Serpico. The story details Serpico's struggle with corruption within the New York City Police Department during his eleven years of service, and his work as a whistleblower which led to the investigation by the Knapp Commission.

Producer Dino De Laurentiis purchased the rights from Maas. Agent Martin Bregman joined the film as co-producer. Bregman suggested Pacino for the main part, and John G. Avildsen was hired to direct the film. Pacino met with Serpico to prepare for the role early in the summer of 1973. After Avildsen was dismissed, Lumet was hired as his replacement. On a short notice, he selected the shooting locations and organized the scenes; the production was filmed in July and August.