If the only witness to a murder has amnesia, how do you catch the killer? Instead of matching fingerprints or DNA, forensic psychologist Dr. Peter Zak solves cases by studying psychological clues and phenomena. Peter, whose specialty is the brain and behavior, consults for the Boston public defenders office, analyzing the thought processes and personalities of witnesses and defendants. Sylvia Jackson was shot in the head and left for dead, her boyfriend murdered. Waking from a coma after six weeks, she remembers nothing-until three months later, when she begins to recall details of the crime and the killer. Finally, Syl accuses her ex-husband, remembering what seems like incontrovertible evidence of his guilt. But Stuart Jackson seems destroyed by his ex's ordeal; could he really be guilty of this vicious crime? Peter quit consulting on trials a year ago when his wife was brutally murdered by a killer angered by Peter's suggestion of an insanity...

G. H. Ephron's gripping crime novels deal with fascinating psychological symptoms at work in the minds of murderers and their targets. In Obsessed, forensic neuropsychologist and expert defense witness Peter Zak is trying to help a coworker, Dr. Emily Ryan, who is being tormented by a stalker. She doesn't have any idea who it could be, and his acts have been escalating, to the point where he's breaking into her car and leaving sick messages. Peter is increasingly worried about where the violence will end. And there is no lack of suspects, as the naive Emily seems to attract admirers blindly; from her colleagues at the Neuropsychiatric Unit where she is studying the brain and its disorders to the other doctors at the Pearce Psychiatric Institute, even Peter notices himself responding to her blond good looks and puppy dog eyes. Or, as suggested by Peter's friend p.i. Annie Squires, is Emily more aware of her appeal than she lets on? When one of the potential...

Amnesia, G.H. Ephron's acclaimed debut, introduced forensic neuropsychologist and expert defense witness Dr. Peter Zak. Returning in Addiction, Peter is back in the thick of things at the Pearce Psychiatric Center, coping with patients as well as everyday average administrative nightmares at the hospital, like budgetary concerns, construction, and colleagues' drug trials. And then the worst nightmare of all-the murder of a colleague.Such an event, if it weren't devastating enough, rekindles Peter's memories of the murder of his wife, which left Peter emotionally shattered and isolated; he's only recently begun to emerge. But he can't retreat this time; he must use his expertise to help reconstruct this baffling and intensely personal killing.Peter discovers his friend and former lover, Pearce psychiatrist Channing Temple, dead from a gunshot wound on hospital grounds. Her 16-year-old daughter Olivia is standing over the body, holding a gun. Did...

From the acclaimed author of Amnesia and Addiction comes the story of a paranoid man accused of killing his wife-is he ill, or is he a great actor trying to get away with murder?Forensic neuropsychologist at Boston's prestigious Pearce Psychiatric Center and expert defense witness Peter Zak regularly testifies at murder trials on issues like a defendant's conception of right and wrong or the reliability of a witness's memory. This time a lawyer calls Peter to the scene of a crime-Nick Babikian has just found his wife brutally stabbed and floating in their backyard pool. The lawyer wants Peter to assess Nick's state of mind. A brilliant but paranoid man who's made millions inventing and marketing his own computer role-playing game, he was working in the house while his wife was stabbed, and he's certain to be accused of wielding the knife. Nick claims his innocence, but he has no proof, though certainly some of what he claims seems true. For...