I've Got a Secret was a weekly game show produced by Mark Goodson and Bill Todman for CBS television. It was a "panel" game show, which means that it had, in addition to a host and guests, a group of people who together acted as judges. The show was created by comedy writers Allan Sherman and Howard Merrill. It was related to Goodson-Todman's other panel show, "What's My Line?". The first episode of the show aired on June 19, 1952 and ran until April 3, 1967. The first version of the show was in black and white. It switched to color in 1966.