The Cygnus Key: The Denisovan Legacy, Göbekli Tepe, and the Birth of Egypt, Bear & Company, 2018
The Cygnus Mystery: Unlocking the Ancient Secret of Life’s Origins in the Cosmos, Sterling Publishing, 2007
Gods of Eden: Egypt’s Lost Legacy and the Genesis of Civilization / Bear & Co., 2002
From the Ashes of Angels: The Forbidden Legacy of a Fallen Race / Bear & Co., 1996, 2001
Göbekli Tepe: Genesis of the Gods: The Temple of the Watchers and the Discovery of Eden, Bear & Company, 2014
Atlantis in the Caribbean: And the Comet That Changed the World, Bear & Company; 3rd edition, 2016
