In 1984, Boris Weisfeiler went on a backpacking trip in Chile and never returned. Chilean investigators insist he drowned, but his family and the U.S. Embassy dont buy it. It takes decades for the truth to emerge, one bit of evidence at a time. With each

The Yonaguni Monument is a large underwater stone complex off the coast of a tiny Japanese island. After their discovery in 1987, divers and local academics thought the rock formations were human-constructed, indicating the presence of a yet-undiscovered

In the early 20th century, a Turkish historian discovered a map made in 1513 by famed cartographer Piri Reis. The map was incredibly detailed and even featured a perfectly accurate depiction of Antarctica — a continent not discovered for another 300 years

War veterans, wolf-hunters, and the kings own men hunted the bloodthirsty beast for three years before it was caught. Some called the beast a werewolf. Others, a serial killer in disguise. But an autopsy of the monster points to a royal conspiracy

In the 18th century, an unidentifiable monster preyed on French villagers. The carnage was so bad, one bishop claimed the beast was a punishment from God. Monster or punishment, something or someone killed dozens of people… Keep up with us this spooky se

Long before they graced our screens as mindless, brain-eating monsters, zombies were rooted in Haitian folklore. Rumors of a zombie potion made their way to 1980s Boston, where an ethnobotanist hoping to uncover the concoction found himself enmeshed in a

Dubbed The Last Vampire of New England, Mercy Lena Brown allegedly feasted on her own family. But she wasnt the first vampire, or the last. Stories like Lenas evolved into modern day conspiracy theories, including a vaccine designed to turn you into a

Before becoming the worlds most famous mummy, King Tut was a teen pharaoh. When he suddenly died at age 19, it changed Egyptian history. But it wasnt until the 1920s that a new theory came into play: King Tut was murdered in a political coup. And he mig

Over the course of their decades-long investigation, the FBI interviewed thousands of potential D.B. Cooper suspects. All leads ran cold. But in 2011, citizen sleuth Tom Colbert started his own search—and he believes he may have finally found the real ide

In 1971, a man operating under the pseudonym "Dan Cooper" hijacked a plane, stole $200,000, strapped the money to his body, and then parachuted into the darkness below. Who was he? And what happened to the money? Conspiracy Theories is now on Instagram @