Antonio Zadra is a sleep and dream scientist at the Hôpital du Sacé-Coeur's Center for Advanced Research in Sleep Medicine and professor of psychology at the Université de Montréal. He has published extensively on the science of dreams and is the co-author of the non-fiction When Brains Dream: Exploring the Science and Mystery of Sleep, from W.W. Norton. The Dreamkeepers is his first novel in a series blending sleep science with dream mythology.