Hidden in the backrooms, basements, and restricted areas of the most famous museums lie some of history's most fascinating mysteries and tales. Embark on a behind-the-scenes, around-the-world tour that includes Madrid's Palacio Real, the Chateau of Versailles, and the Smithsonian Institution. Discover King Herod's tomb, how a leather shield can work better than steel, and the connection between an ancient amulet and Star Trek's Mr. Spock. We examine collections, celebrated and obscure, and use cutting edge research to unlock their secrets.