Author Brad Meltzer discusses his new book, History Decoded: The 10 Greatest Conspiracies of All Time, at this event leading up to the 2013 Book Festival of the MJCCA. Meltzer counts down the world's most intriguing unsolved mysteries in this book. Adapted from "Decoded," Meltzer's hit show on the History network, History Decoded explores unexplained questions such as: Is Fort Knox empty? Why was Hitler so intent on capturing the Roman "Spear of Destiny"? What's the government hiding in Area 51? Did Lee Harvey Oswald act alone?