The Killers (1964)
The Killers, sometimes marketed as Ernest Hemingway's The Killers, is a 1964 crime film directed by Don Siegel, starring Lee Marvin, John Cassavetes, Angie Dickinson and Ronald Reagan, and released by Universal Studios. The movie remains notable for being future U.S. president Reagan's last theatrical film before entering politics as well as the only one in which he plays the role of a villain.
More at Wikipedia.