A founding member of the high-wire act "The Flying Wallendas," Karl Wallenda dazzled audiences with daring tightrope performances before taking a fatal fall in 1978.

After his zoning petition was repeatedly dismissed, Marvin Heemeyer decided to modify a bulldozer into a lethal "killdozer" and go on a rampage in Granby, Colorado.

Though Saving Private Ryan was fictional, it was inspired by the true story of Frederick Niland, who was sent home after his three of his brothers were believed to be killed in action.

Though he's the face of the organization, there's so much more to the Medellín Cartel than just Pablo Escobar.

While Martin Scorsese's 2002 drama about the gang wars of 19th-century Manhattan captured the violence of the feud between the Dead Rabbits and Bill the Butcher's Natives, the real Bowery Boys were even more vicious than portrayed onscreen.

Vesna Vulović was the only survivor of JAT Flight 367, which crashed on January 26, 1972, in the modern-day Czech Republic after there was an explosion in the baggage compartment.

Timothy Treadwell had been warned that he was getting too close to the brown bears in Katmai National Park, but he continued interacting with them until one killed and partially ate him and his girlfriend, Amie Huguenard.

These acts of cannibalism include suspected attacks by South Pacific tribes, desperate attempts to avoid starvation, and deranged murders.

Authorities found a map in Robert Hansen's Anchorage home marked with tiny "X" symbols, showing where the so-called "Butcher Baker" killed and buried his victims in the wilderness.

In October 1943, a U.S. Navy destroyer was supposedly turned invisible and teleported from Philadelphia to Norfolk. But did it really happen?

Composed of Irish immigrants, the Dead Rabbits controlled territory in Lower Manhattan and the Five Points — and frequently brawled with the nativist Bowery Boys.

Pablo Escobar's $25 billion net worth afforded him a lavish lifestyle complete with a 7,000-acre estate, a luxury prison, and so much cash that he didn't even notice when he lost millions of dollars to hungry rodents.