Investigating mysteries that elude scientific explanation.

Ancient and sacred sites with alleged healing powers, from the grotto of Lourdes and Machu Picchu to mystical rainforests and the Ganges River.

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.