Brad Meltzer's Decoded (or simply Decoded) is an American investigative television series focused on historical mysteries and alleged conspiracy theories, produced by Go Go Luckey and Berman/Braun, that premiered December 2, 2010, on the History Channel. The series is hosted by Brad Meltzer, an author of political thriller novels and non-fiction works, and follows a team of investigators who try to determine the meanings behind various symbolism, alleged secret codes and conspiracies that surround us every day. History Decoded, a book by Meltzer that was inspired by the show, was published in October 2013.