Leisure Books is an imprint of Dorchester Publishing specializing in horror and thriller mass market paperbacks. As of 2000, Leisure Books was the only U.S. publisher with a line of horror books. Leisure Books has published novels and collections by a number of horror's notable authors, such as: Brian Keene, Richard Laymon, Graham Masterton, Ray Garton, Stacy Dittrich, Jack Ketchum, Sarah Pinborough and Douglas Clegg.