From Wikipedia, the free encyclopedia. Adrian Gilbert is a bestselling British author and independent publisher who lives in England. His books are centred around investigations into ancient Esoteric knowledge and religious Mysteries. He attended the University of Kent at Canterbury. After travels to the Middle East he came to work in publishing and then Computer Programming. He returned to publishing in 1986 and afterwards setting up his own company Solos Press in 1991 to specialize in the publication of books concerning Gnosticism, Christian mysticism and Hermetic Philosophy. He is mainly known for his book The Orion Mystery which was co-authored by Robert Bauval in 1994. Description above from the Wikipedia article Adrian Gilbert, licensed under CC-BY-SA, full list of contributors on Wikipedia.​