In 1973, Pacino co-starred in "Scarecrow", with Gene Hackman, and won the Palme d'Or at the Cannes Film Festival. That same year, Pacino was nominated for an Academy Award for Best Actor after starring in "Serpico", based on the true story of New York City policeman Frank Serpico, who went undercover to expose the corruption of fellow officers. In 1974, Pacino reprised his role as Michael Corleone in "The Godfather Part II", which was the first sequel to win the Best Picture Oscar; Pacino was nominated a third time for an Oscar, this second nomination for the Corleone role being in the lead category. "Newsweek" magazine has described his performance in "The Godfather Part II" as "arguably cinema's greatest portrayal of the hardening of a heart".