Land of Manson Cities of the Underworld : Season 3 Episode 7

He was the ringleader behind some of the most notorious murders in history. He terrified the world and plunged the city of Los Angeles into a state of paranoia and fear. He's Charles Manson, and the deserts around Los Angeles were his home... and he hoped the underground would be his haven. But Manson and his followers weren't the only things lurking beneath the streets of LA. We'll take you beneath the most congested streets in America, into the tunnels where corrupt cops ran the city in secret and the largest subway system in the world lays in waste. From earthquakes to UFOs, this city has to be ready for anything. But with military bunkers protecting our shores and subterranean disaster relief war rooms, LA's underground also holds the key to its survival.