Deliver Your Audience (DYA), the company Doubleday turned to when they wanted to market John Grisham's novel, The Whistler, has a long list of clients in the publishing and movie industries: Universal Pictures, Sony Pictures Entertainment, CBS Films, Lionsgate Films, St. Martins Press, DK Publishers, Penguin Random House, Houghton Mifflin Harcourt, Hachette, MacMillan, Dutton, Putnam, Doubleday, Berkley, Viking...and now DartFrog!