Internist Tess Gerritsen's medical knowledge adds an eerie realism to this novel of mystery and suspense. As the lone survivor of serial killer Andrew Capra, Dr. Catherine Cordell escapes the horror she lived in Savannah to go to Boston and starts to put her life back together again. Though she rarely goes anywhere besides the hospital and lives in a very secure apartment, she is able to function very adequately in her position as a surgeon at Pilgrim Medical Center. But her sense of relative security is short-lived as a new serial killer emerges in Boston, and the killings are uncannily similar to those, which occurred in Savannah two years ago. Okay-Andrew Capra is dead, shot by Dr. Cordell, his almost-victim. Thus begins the quest for the new culprit. The endless possibilities add to the allure of this novel: Dr. Cordell, perhaps, a copycat killer, someone avenging Capra's death? Enter Boston's finest, "St. Thomas Moore", the detective who still brandishes a wedding band two years after the death of his wife, Jane Rizzoli, lone female detective out to prove her worth, Darren Crowe, resident male chauvinist. Moore and Rizzoli are a fine addition to this cast of characters-Moore struggles with his attraction to Catherine while Rizzoli struggles to succeed in a male -dominated profession while trying to understand her jealousy of Catherine. THE SURGEON plays like a finely tuned piano, each chord blending in harmony leading to the final resolution. The skillful use of medical terminology as well as the knowledge of anatomy, while somewhat gruesome, adds a chilling sense of reality to the murders. And, as the clues unfold, leading to the identity of the killer, the reader experiences a sense of dread as to who the next victim will be. Lights will stay on all night for this novel that is impossible to put down, and once finished, you won't want to sleep in the dark.