A new study put forth a compelling theory for this bizarre tragedy.

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Buyer beware.

For starters: what is it?

Is it a message, or a prank?

Was it a terrible accident, or something more sinister?

A group of college kids went hiking, only to be found slaughtered and scattered across the landscape.

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Amid the charred wreckage, a chilling mystery emerged...

Some of history's creepiest events have happened entirely inside the human mind.

These first-hand out-of-body experience stories will completely change your outlook on the otherworldly.

In 1845, the doomed Franklin expedition set sail for the Northwest Passage, never to be seen again.

In 1921, the ship was spotted in North Carolina under suspicious circumstances. Days later, the crew and their belongings had disappeared – for good.

Beneath the streets of New York's trendiest neighborhood is the scene of a 200-year-old unsolved murder.

He's one of the most famous figures in Australian history ... only because police can't figure out who he was or what happened to him.