Scholars and survivors discuss the mystery of cults.

The truth behind the legend of the vampire.

Some believe that the Tibetan Book of the Dead provides answers to questions about the afterlife.

The mysterious ritual of exorcism.

Prophecies and oracles from around the world point to December 21, 2012 as doomsday.

Areas on Earth exhibit aspects of black holes, such as the Bermuda Triangle.

Theories on how paradise was lost and where it might be found.