Tim Wallace-Murphy (1930-2019) studied medicine at University College, Dublin, and then qualified as a psychologist; he then became an author, lecturer, and historian. He has written more than a dozen books, including The Mark of the Beast, Rex Deus, and Rosslyn: Guardian of the Secrets of the Holy Grail.
Marilyn Hopkins was born in Totnes, England. Gifted with a natural dowsing ability, she has a deep interest in complementary medicine. She has contributed to seminars, talks, and lectures including an ecological seminar at Rosslyn organized by the Scottish Ecological Design Association.
Polly Lee is an award-winning actress best known for her roles on The Americans (FX) and Younger (Showtime). On stage, she has worked in NYC and across the country for almost twenty years. Lee has narrated over fifty nonfiction and young adult fiction books and has received many AudioFile Earphones Awards for her work.