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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. This is the true foundation of the city that never sleeps, and host Don Wildman is headed deep beneath the skyscrapers, taxicabs and street vendors into a New York that few have ever seen before . From a hidden Freemason tunnel and secret world of the Sandhogs, to mobster hideaways and gang escape routes, we're uncovering the secret societies that built New York--from the underground up.