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A deadly explosion in Nashville shines a national spotlight on the strange, decades-long history of "lizard people," from the murky swamps of South Carolina to the darkest corners of the Internet.

A UFO enthusiast in Long Island is arrested for allegedly attempting to poison elected officials. But he insists he's innocent – and alleges the real criminals are the officials covering up remains from a nearby alien crash landing.

For decades, on the outskirts of Louisville, KY, thrill-seeking teenagers have dared each other to walk the rickety Pope Lick Train Trestle in hopes of glimpsing an evil Goatman. But locals are horrified when the creature's death count becomes real.

When the body of devout 16-year-old Jeannette DePalma is found near the site of rumored witch activity, police officers, reporters, and a local church leader insist that she fell prey to the deadly rituals of a local coven.

When a space-obsessed mechanical genius mysteriously vanishes after building a UFO in his backyard, his friends and family are left to investigate the possibility of an intergalactic journey.

A Navajo woman named Sarah Saganitso is murdered in Flagstaff, AZ. When a local white man confesses, his attorney's explosive defense – that a "skinwalker" did it – forces the victim's family to fight centuries of anti-Native racism for justice.

A family backpacking trip to the Smoky Mountains turns tragic when six-year-old Dennis Martin suddenly disappears, catalyzing a massive manhunt – and rumors of a kidnapping by a giant, hairy "wildman" believed to roam the region.

In 2012, detectives in San Francisco's Chinatown uncover a wave of hauntings: female ghosts who threaten to kill elderly mothers' sons to marry them in the afterlife. What are these "ghost marriages," and why are they suddenly everywhere?