`I could tell you, but then I'd have to kill you'. That cliche apparently doesn't apply to this programme that reveals what goes on behind the scenes of some of America's legendary monuments and powerful organizations, with some inside information that has previously been withheld from the public. If you've ever wondered what goes on at the FBI or Fort Knox, this is your chance to learn about them. And what about Area 51? You'll also learn information about that infamous military base (and maybe more?). `America's Book of Secrets' is your chance to go beyond locked doors and security checkpoints to see things that you were never intended to see.