Her bestsellers explore the wildest, strangest crimes. Now her husband has been murdered— is she a target, a victim, or is this even darker?​ NYPD Detective Declan Shaw gets the call from his lieutenant at 9:42 p.m. How fast can you get to 211 Central Park West? The Beresford Building. At Apartment 18A, Shaw’s partner briefs him. The woman inside called 911 to report a break-in—and the murder of her husband. She fired a round at first responders, then made a baffling demand. Nobody comes in but Detective Declan Shaw. The woman answers, covered in blood. She appears to be in shock. A body is lying dead on the floor of the luxurious living room.  Shaw walks in and spots floor-to-ceiling shelves filled with hardcover books. He recognizes the name—bestselling true-crime author Denise Morrow. When he looks closer, he sees they all show the same familiar picture on the back.  “This is you?” Shaw asks. “You’re a writer?” ​ The real question Is she also a killer?