Located in the Moc Chau Island park in the northwestern province of Son La, the Back Long pedestrian bridge spans over 2,000 feet above a 490-foot-deep gorge.

In June 1980, Candace Montgomery struck her best friend Betty Gore with a three-foot axe 41 times after having an affair with Gore’s husband — and got off scot-free.

When Mexican police officers saw the skulls hidden away inside a cave, they believed they had found evidence of a modern mass murder.

On April 11, 2001, 20-year-old Branson Perry vanished from outside his own home in Skidmore, Missouri. Two years after his disappearance, a sickening clue emerged.

Red wolves were officially declared extinct in the wild in 1980, and conservationists have been working for decades to bolster their numbers.

Chris Kyle is undoubtedly one of the most decorated — and deadliest — snipers in American history. So why did he exaggerate so many of his heroic stories?

Gregory Forth has collected more than 30 eyewitness accounts that the "Hobbits" are still alive on the Indonesian island of Flores.

After a neighbor named John Favara accidentally ran over Frank Gotti, the middle son of Mafia boss John Gotti, the man vanished forever without a trace.

The 49 rooms unearthed in the subterranean city of Matiate make up only three percent of its estimated total area.

Scientists tested the DNA of modern-day members of the Muwekma Ohlone Tribe against remains dating as far back as 2,000 years and found a high level of genetic continuity.