The television series Impossible was created by Bruce Geller. It premiered on the CBS network in September 1966 and ran for 171 one-hour episodes over seven seasons, ending in March 1973. The series was subsequently revived by the ABC network in October 1988, running for 35 episodes over two abbreviated seasons before ending in February 1990. This article lists episodes from both series, including both broadcast order and production order, which often differed considerably.