Adapted from Decoded, Meltzer's hit show on the HISTORY network, History Decoded explores fascinating, unexplained questions. Is Fort Knox empty? Why was Hitler so intent on capturing the Roman `Spear of Destiny'? What's the government hiding in Area 51? Where did the Confederacy's $19 million in gold and silver go at the end of the Civil War? And did Lee Harvey Oswald really act alone? Meltzer sifts through the evidence; weighs competing theories; separates what we know to be true with what's still-and perhaps forever-unproved or unprovable; and in the end, decodes the mystery, arriving at the most likely solution. Along the way we meet Freemasons, Rosicrucians, Nazi propagandists, and the real DB Cooper.