In 1971, a man calling himself DB Cooper boarded a flight bound for Seattle. The plane reached its destination safely, but not before Cooper had threatened to blow it up unless his demands were met. What followed was one of the largest manhunts in US history, as the FBI threw the full weight of their resources at answering one question: Who was DB Cooper? This episode originally aired on Deathbed Confessions.

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From cardboard cutouts to DNA matching, British Big Cat hunters have tried to pin down exactly what kinds of felines haunt the British Isles. They’ve also offered some believable explanations about where they came from and how they ended up in the U.K. But some researchers don’t think they’re cats at all. They believe the animals could be spirits… from another world.

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The British Isles were once home to a diverse population of powerful cats like lions, leopards, and lynxes. Scientists believe humans wiped them out more than a millennium ago. But… maybe we didn’t. Since the 1500s, British people have sporadically seen huge felines on their home soil. Experts claim they shouldn’t exist. Those who have survived their attacks disagree.

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Ethnobotanist Wade Davis returned from Port-au-Prince with the ingredients for a zombie potion that made people appear dead. But this only completed half his mission — he needed the antidote. But no matter how much Davis studied, he couldn’t explain how one would work. At least, not scientifically. For that, he would need to infiltrate Haiti’s most dangerous secret societies… in search of spells.

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In 1982, Canadian ethnobotanist Wade Davis flew to Port-au-Prince, hoping to find the ingredients for a poison said to turn the living into the living dead. If real, Davis believed the potion would revolutionize science. But in order to attain it, he would first need to immerse himself in voodoo traditions, accept the existence of magic, and come face-to-face with a real-life zombie.

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Secret doors, a cast-off wig, mummified arms — strange and exhilarating clues have peppered the search for Nefertiti’s final resting place. What happened to the famed leader, once branded a heretic? The evidence uncovered by archaeologists isn’t definitive. The debates rage on…

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More than 3,400 years ago, Nefertiti and her husband, the pharaoh Akhenaten, brought sweeping changes to their kingdom. Several years later, she suddenly vanished from the historical record. Some believe she died of the plague. Others think she was banished. But some Egyptologists cite evidence that she ruled as co-regent with Akhenaten — and then on her own.

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Two days after three inmates broke out of Alcatraz prison, a crewman on a patrol boat spotted a homemade oar in the water. Authorities believed it was evidence that the trio drowned. But others think it was discarded once the inmates successfully reached the mainland.

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Alcatraz wasn't just a prison, it was a fortress designed to hold the most notorious criminals in the world. But prisoner Frank Morris had other ideas. Over many months in 1962, Morris and three other inmates worked in shifts to execute one of the most daring prison breaks in American history.

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For years, conspiracy theorists probed and prodded the army’s official explanation for the debris they found outside Roswell. It’s hard to prove anything when you’re up against a machine as big as the U.S. military. But as the years go by, something shifts. The men who were on the base back then start to open up. Share details they’ve kept close all these years. None more so than First Lieutenant Walter Haut. The words he wrote before he died might just be the sledgehammer that cracks open one of the biggest conspiracy theories of all time. This episode originally aired on Deathbed Confessions.

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