It Takes a Thief is an American action-adventure television series that aired on ABC for two and a half seasons between January 9, 1968, and March 24, 1970. It starred veteran movie actor Robert Wagner in his television debut as sophisticated thief Alexander Mundy, who works for the U.S. government in return for his release from prison. For most of the series, Malachi Throne played Noah Bain, Mundy's boss.
It was among the last of the 1960s spy television genre, although Mission: Impossible continued for several years. It Takes A Thief was inspired by, though not based upon, the 1955 Cary Grant motion picture To Catch a Thief, directed by Alfred Hitchcock; both of their titles stem from the English proverb "It takes a thief to catch a thief."