Sean Costello is the author of eight novels and six screenplays, one of which has been optioned to film by David Hackl, director of Saw V. Depending on the whims of his muse, Costello's novels alternate between two distinct genres: Horror and Thriller. His horror novels have drawn comparisons to the works of Stephen King, and his thrillers to those of Elmore Leonard. In the real world he's an anesthesiologist, but, if asked, he'd tell you he'd much rather be writing. Sean is currently hard at work on his next novel.