To Tell the Truth is an American television panel game show, created by Bob Stewart and originally produced by Mark Goodson-Bill Todman Productions, that has aired in various forms since 1956 both on networks and in syndication. As of June 14, 2016, the show is one of two game shows in the United States to have aired at least one new episode in at least seven consecutive decades, the other game show being both incarnations of The Price Is Right. As of the 2016 version, a total of 26 seasons of the various versions of To Tell the Truth have been produced, surpassing the 25 of What's My Line? and the 20 of I've Got a Secret.
The show features a panel of four celebrities whose object is the correct identification of a described contestant (or pair of contestants) who has an unusual occupation or has undergone an unusual experience, whose affidavit the show's moderator/host reads beforehand. This "central character" is accompanied by two impostors who pretend to be the central character (or characters); together, the three persons (or pairs) are said to belong to a "team of challengers." The celebrity panelists question the three contestants (or pairs); the impostors are allowed to lie, but the central character is sworn "to tell the truth." After questioning, the panel attempts to identify which of the three challengers is telling the truth and is thus the central character.