"Fail-Safe" is a 1964 film directed by Sidney Lumet, based on the novel by Eugene Burdick and Harvey Wheeler. The story revolves around a malfunction in a U.S. military system that mistakenly sends bombers to attack the Soviet Union. As tensions rise, the U.S. government scrambles to prevent a nuclear disaster. The film features a strong cast, including Henry Fonda and Walter Matthau, and explores themes of war, technology, and human error. It is notable for its tense atmosphere and moral dilemmas, highlighting the potential consequences of miscommunication during the Cold War era.