Host Robert Stack presides over an investigation into unsolved mysteries ranging from murders to UFO sightings. Through reenactments and interviews, viewers are presented with the known facts of each case. Anyone with additional information is then urged to contact the show's producers via a toll-free telephone number. Written by
Kevin Ackley <email@example.com>
Did You Know?
Although the series was still doing well in the Nielsen ratings, NBC canceled it at the end of the 1996-97 season, citing a desire for television shows designed to attract younger audiences. See more
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