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