With scores of millions of books in print, translation into two dozen languages, and one of the most popular heroes in contemporary fiction to his name, #1 New York Times bestselling author Jonathan Kellerman is the unequivocal “master of the psychological thriller” (People). In his newest novel Kellerman delivers a tour de force–poignant, dark, and chilling–that illuminates a shadowy world where impulse rules. Tanya Bigelow was a solemn little girl when Dr. Alex Delaware successfully treated her obsessive-compulsive symptoms. Now, at nineteen, she still seems older than her years–but her problems go beyond hyper-maturity. Patty Bigelow, Tanya’s aunt and adoptive mother, has made a deathbed confession of murder and urged the young woman to seek Delaware’s help.