Near the end of the Korean War, a platoon of U.S. soldiers is captured by communists and brainwashed. Following the war, the platoon is returned home, and Sergeant Raymond Shaw is lauded as a hero by the rest of his platoon. However, the platoon commander, Captain Bennett Marco, finds himself plagued by strange nightmares and soon races to uncover a terrible plot.
- Year: 1962
- Country: United States of America
- Genre: Thriller, Drama
- Studio: MC Productions, United Artists
- Keyword: communist, cold war, korean war, stepparents, conspiracy, brainwashed assassin, brainwashing, black and white, election, presidential candidate, sleeper agent, queen of diamonds, korea
- Director: John Frankenheimer
- Cast: Frank Sinatra, Laurence Harvey, Angela Lansbury, Janet Leigh, James Gregory, Henry Silva