Christopher Golden is a well-known and prolific sci fi and fantasy author of many adult and YA novels, including Ghosts of Albion (with Amber Benson), Hidden Cities (with Tim Lebbon), and the forthcoming The Secret Journeys of Jack London, (also with Lebbon). He is also known for his many media tie-in works, including novels, comics, and video games, in such worlds as Buffy, Hellboy , and X-Men .