New York: St Martin's Minotaur, (2003) dj. SIGNED hardcover first edition - The fourth mystery featuring forensic neuropsychologist and expert defense witness Peter Zak, who is trying to help a coworker, Dr. Emily Ryan, who is being tormented by a stalker. Author William Tapply called this "The most compelling medical mystery I've read in a very long time...intelligent, taut, and utterly terrifying." SIGNED by Hallie Ephron on the title page. 291 pp. ISBN: 0-312305311.