Tanya Bigelow was a solemn little girl when Dr. Alex Delaware successfully treated her obsessive-compulsive symptoms. Now, at nineteen, Patty Bigelow, Tanyas aunt and adoptive mother, has made a deathbed confession of murder and urged the young woman to seek Delawares help. Armed with only the vaguest details, Delaware follows a trail twisting from L.A.s sleaziest low-rent districts to its overblown mansions, retracing Patty and Tanyas nomadic and increasingly puzzling life. Then, a very real murder tears open a terrifying tunnel into the past, where secretsand bodiesare buried. Dramatic, action-packed, and filled with the psychological detail that only Jonathan Kellerman can provide, Obsession is a whodunit, a whydunitand something unique: a did-it-even-happen? This is Kellerman at his heart-racing best.