Cities Of The Underworld

42:53 -- Inflicting over $80 billion in damage, and causing the deaths of over 1,800 people, Hurricane Katrina was among the greatest engineering disasters in US history.

43:13 -- Moscow is a city known for its ruthless leaders and abundant secrets. Today it's a modern metropolis, but far below its crowded streets lie the reminders of its war-torn past, and pieces of Stalin's terrifying legacy.

42:53 -- Washington D.C. is headquarters for one of the most powerful governments in the world, as well as some of the nation's deepest secrets. The decisions made here echo around the world.

42:32 -- Today, New York is the biggest city in the country, but it's got some dark secrets in its past. It was founded by covert groups, overrun with gangs and mob bosses, and ruled by secret societies.

44:26 -- From Abraham to Nostradamus, the ancient world was shaped by people who believed they foresaw the will of God. Some say their fiery prophecies will come true in our lifetime - and Jerusalem is at the heart of it all.

44:21 -- Chicago was once a playground for mobsters and corrupt politicians, and it wouldn't be the third largest city in the US today if it weren't for the shady dealings that went on just beneath its streets.

45:14 -- Before the mysterious disappearance of the ancient Maya, Belize was the nerve center of this advanced civilization. Hundreds of ruins dot the landscape and reveal clues to bloody Mayan rituals and advanced architecture.

42:30 -- Prague is a city cloaked in mystery, with an underground to match. From quarries where Hitler may have stored his most powerful secret weapon to mines that doubled as Communist slave camps, Prague has surprising stories to tell.