Capone's Escape Tunnels
Rob Nelson investigates rumors of a secret underground escape route used by the infamous gangster Al Capone. In Washington state, Rob tries to uncover who or what built a vast landscape of earthen mounds in Washington state.
7.5 /10
Mystery of the Serpent Mound
Rob Nelson explores mysterious tunnels beneath Denver's airport, capitol building, and downtown to investigate rumors of a secret organization that operates below. In Ohio, he tries to uncover the ancient secrets of a giant mound shaped like a serpent.
7.3 /10
America's Buried Massacre
What caused the deaths of 57 Irish railroad workers in 1832 Pennsylvania at a place called Duffy's Cut. And then, we look at Mountain Lake in Virginia that has mysteriously lost most of it's water.
7.8 /10
Rocky Mountain Monsters
Rob Nelson examines a set of bizarre markings that suggest a violent clash between prehistoric beasts. In California, he investigates if a strange lake is a home to alien life.
7.6 /10
Great Lakes Bermuda Triangle
Rob Nelson descends into a cave 30 feet beneath Texas in search of evidence of a mass extinction event. Then, he heads to Lake Michigan to investigate an unexplained, Bermuda Triangle-like phenomenon that has caused ships to disappear for centuries.
7.7 /10
California's Hidden Doomsday
Rob Nelson heads to California to investigate a network for major fault lines that could set off an unprecedented mega-quake. Then, he explores a mysterious sinkhole that some believe is an endless pit to the center of the Earth.
6.9 /10
Secret History of the New World
Rob Nelson investigates investigates a cluster of ancient ruins in New England that suggest Europeans arrived in the Americas almost 1,000 years before Columbus. Then, he heads to California where a dormant super volcano may be showing new signs of life.
7.5 /10
American Stonehenge
Rob Nelson investigates the mysterious pattern of rocks at the bottom of Lake Michigan known as Underwater Stonehenge. At the notorious Alcatraz prison, Rob uses state-of-the-art technology in search of rumored escape tunnels.
7.2 /10

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