Searching for the truth amidst the hidden identities of historical figures such as Jack the Ripper, D.B. Cooper, and the Man in the Iron Mask.

Exploring significant religious sites across the globe, including South Dakota's Black Hills and a monastery in Catalonia.

Analyzing notably enigmatic artwork such as da Vinci's "Last Supper", "Girl with a Pearl Earring", and a crucifixion icon with real teeth

A look at ancient and unorthodox medical treatments from regression therapy to herbal supplements.

Assessing unusual cases of people who vanished without a trace, including an explorer, a British secret agent, and an entire family.

Exploring the unanswered questions of the Second World War, such as Raoul Wallenberg's fate and who betrayed the family of Anne Frank.

Tracing the origins of mummification in cultures beyond Egypt, as well as delving for answers to unresolved mysteries behind the practice.

A search for answers to notable urban legends including Prague's history of the occult, Moscow's hidden metro line, and the discovery of a walrus skeleton in a London mass grave.

Analyzing the causes of obscure medical conditions such as Munchausen Syndrome, Stendahl Syndrome, and mass hysteria.

Uncovering previously classified military operations including the recruitment of Nazi scientists in America following the Second World War and the government's use of false flags.

Examining global examples of human services fueled by religious and cultural beliefs that include ritualistic burnings and bloodlettings.

Ten notable cases of information that were deemed unacceptable for public consumption include missing Biblical gospels and a baffling manuscript.