The Secrecy Behind the Origins of Psychedelics

Graham Hancock is a researcher, journalist, and author of over a dozen books including "Fingerprints of the Gods" and "America Before: The Key to Earth's Lost Civilization." Check out his new Netflix series, "Ancient Apocalypse," on November 11. www.grahamhancock.com

Attorney and scholar Brian C. Muraresku is the author of The Immortality Key: The Secret History of the Religion with No Name. Featuring an introduction by Graham Hancock, The Immortality Key is a look into the psychedelic origins of the world's great spiritual practices and what those might mean for how we view ourselves and the world around us.