Sigma Force confronts humankind’s greatest threat in an adventure that races from the Roman Coliseum to the icy peaks of Norway, from the ruins of medieval abbeys to the lost tombs of Celtic kings. The ultimate nightmare is locked within a talisman buried by a dead saint, an ancient artifact known as the Doomsday Key.
Learn about the book here http://bit.ly/DoomsdayKey Learn about the author here http://bit.ly/JamesRollins5