The Third Man (1949)

Directed by Carol Reed. Set in post-war Vienna, the story unfolds as American writer Holly Martins arrives to meet his friend Harry Lime, only to discover that Lime has died in a mysterious accident. Martins becomes entangled in a complex web of intrigue, discovering conflicting accounts of Lime's life and death. As he investigates, Martins encounters enigmatic characters and uncovers a shadowy black market involving stolen penicillin.