Gary A. David is an author and independent researcher who studies the archaeological ruins and rock art.

In 2006 after more than a decade of fieldwork and scholarly inquiry, his nonfiction book The Orion Zone: Ancient Star Cites of the American Southwest was published. This volume describes a pattern of Hopi villages and ruin sites that precisely mirrors Orion, with an ancient site corresponding to each major star in the constellation.

Todd is joined this week by Ralph Blumenthal, author of the new book "The Believer: Alien Encounters, Hard Science and the Passion of John Mack."

"The Believer" is the weird and chilling true story of Dr. John Mack. This eminent Harvard psychiatrist and Pulitzer Prize-winning biographer risked his career to investigate the phenomenon of human encounters with aliens and to give credibility to the stupefying tales shared by people who were utterly convinced they had happened.

For more information on this book and other workings from Bluementhal, click HERE.

Todd is once again joined by Freddy Silva is a bestselling author, and a leading researcher of alternative history, ancient knowledge, sacred sites, and the interaction between temples and consciousness.