Ever wonder what's hiding behind the scenes of America's most renowned museum complex? Find out as host Tom Cavanagh ("Ed") takes you on an entertaining insider's tour of the private rooms, high-tech vaults, and cutting edge labs of the Smithsonian Institution, revealing some of the amazing artifacts and rarely seen treasures that visitors can't see. Follow along as Tom uncovers the history of each object-its origins, how it's being preserved and studied, and what it might tell us.