Investigating mysteries that elude scientific explanation.

World War II left behind a number of unexplained events, such as the identity of Anne Frank's betrayer and the ultimate fate of Raoul Wallenberg.

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

Time-honored but not always scientifically accepted, non-traditional healing methods including herbal remedies and regression therapy.

Associated with Ancient Egypt, the practice of mummification occurred in other parts of the world, leaving behind some unanswered questions.