Ice Station Zebra is a 1968 American espionage thriller film directed by John Sturges and starring Rock Hudson, Patrick McGoohan, Ernest Borgnine, and Jim Brown. The screenplay is by Douglas Heyes, Harry Julian Fink, and W. R. Burnett, loosely based on Alistair MacLean's 1963 novel. Both were inspired by real-life events that took place in 1959. From Wikipedia
