Mark Pryor is the author of the Hugo Marston novels, The Bookseller, The Crypt Thief, The Blood Promise, The Button Man, The Reluctant Matador, The Paris Librarian, and The Sorbonne Affair, as well as Hollow Man and Dominic. He has also published the true-crime book As She Lay Sleeping. A native of Hertfordshire, England, Pryor is an assistant district attorney in Austin, Texas, where he lives with his wife and three children.