The IPCRESS File is Len Deighton's first spy novel, published in 1962. It was made into a film in 1965 produced by Harry Saltzman, directed by Sidney J. Furie and starring Michael Caine. The novel, which involves Cold War brainwashing, includes scenes in Lebanon and on an atoll for a United States atomic weapon test, as well as information about Joe One, the Soviet Union's first atomic bomb, although these elements did not appear in the film version.