Beneath the Kremlin lies a shocking ancient truth. And it's about to be stolen. Since the times of Ivan the Terrible, generations of Russian leaders have turned the Kremlin into a fortress within a fortress, stocking its labyrinthine underground with secret vaults, elegant chambers, and priceless treasures. Now a master thief has the ultimate motivation to stage an assault on the Kremlin's inner sanctum. Two lives depend on it. Thousands of years of religious faith hinge on it.