Cities of the Underworld - Season 2 Episode 1 -

For billions across the globe, Jerusalem is considered ground zero for Armageddon. While most of the world's population considers it a holy land, it's also one of the bloodiest cities the world has ever known. From a hidden occult city built by the Knights Templar to the hiding place for the Dead Sea Scrolls, the evidence of the apocalypse is buried all over the holy city.