D. L. Wilson is the author of the National Bestselling thriller, UNHOLY GRAIL (Berkley Books) which reached #9 and #8 on the Nielsen National Bookscan ratings behind Nicholas Sparks and Stephen King. Clive Cussler says UNHOLY GRAIL is "A tale rich with intrigue that grips the imagination. A must read." Wilson is a member of the board and VP Membership of the International Thriller Writers and a member of Pennwriters, Maryland Writers' Association, and Philadelphia Writers' Association. He has delivered keynote addresses and numerous writing workshops. His latest thriller, SIROCCO, is getting rave reviews.