I've Got a Secret is an American panel game show produced by Mark Goodson and Bill Todman for CBS television. Created by comedy writers Allan Sherman and Howard Merrill, it was a derivative of Goodson-Todman's own panel show, What's My Line? Instead of celebrity panelists trying to determine a contestant's occupation, as in What's My Line, the panel tried to determine a contestant's secret: something that is unusual, amazing, embarrassing, or humorous about that person.