Arguably the earliest instance of a plane whose pilot (and the plane itself) went missing is the 1910 disappearance of an aviator named Cecil Grace.

Grady Stiles Jr. led an interesting life and suffered a death that was just as intriguing. He was known as the Lobster Boy and had even committed murder.

On 10 April 1990, the crew took the Casie Nicole a fishing expedition. Five days later, only one man was found. The crew’s fate is a mystery.

Where is all the Fort Knox gold? Only a handful of people have been inside the vault, and there hasn’t been audit since the mid-1970s.

Building the Parthenon was costly and labor-intensive. Huge slabs of marble had to be moved from Mount Pentelicus, a journey of ten miles.

There is nothing wrong with being a fan. But sometimes obsession goes too far. See our list of the creepiest celebrity stalkers.

The Imperial Army of Japan is purported to have hidden tons of gold in the Philippines. Where is the Yamashita gold or does it even exist?

Hidden for over a century, Scotland Yard took seriously the possibility that American Dr. Francis Tumblety was the notorious Jack the Ripper.