The Message of the Sphinx: A Quest for the Hidden Legacy of Mankind
Underworld: The Mysterious Origins of Civilization
The Sign and the Seal: The Quest for the Lost Ark of the Covenant
America Before: The Key to Earth's Lost Civilization
Supernatural: Meetings with the Ancient Teachers of Mankind
Magicians of the Gods: Sequel to the International Bestseller Fingerprints of the Gods
The Master Game: Unmasking the Secret Rulers of the World
Fingerprints of the Gods: The Evidence of Earth's Lost Civilization
Aftershock: The Ancient Cataclysm That Erased Human History
The Orion Mystery: Unlocking the Secrets of the Pyramids