"Graham Hancock's "Entangled"
Entangled is the first fantasy adventure novel from the bestselling non-fiction author of The Sign and the Seal, Fingerprints of the Gods, Heaven's Mirror and Supernatural. This is a great read, and covers such topics as consciousness, time-travel, out-of-body experiences, near-death experiences, Ayahuasca, DMT, telepathy, and parallel realms.