The Third Man is a 1949 film noir directed by Carol Reed, written by Graham Greene, and starring Joseph Cotten, Alida Valli, Orson Welles and Trevor Howard. Set in post-World War II Allied-occupied Vienna, the film centres on American writer Holly Martins (Cotten), who arrives in the city to accept a job with his friend Harry Lime (Welles), only to learn that he has died. Martins stays in Vienna to investigate Lime's death, becoming infatuated with Lime's girlfriend Anna Schmidt (Valli).