The Devil at 4 O'Clock is a 1961 American adventure film directed by Mervyn LeRoy and starring Spencer Tracy and Frank Sinatra. Based on a 1958 novel with the same title by British writer Max Catto, the film was a precursor to Krakatoa, East of Java and the disaster films of the 1970s, such as The Poseidon Adventure, Earthquake and The Towering Inferno.