He slips into houses at night and enters women’s bedrooms without a sound, and when they awaken, they find themselves in a living nightmare. Judging by what he does to his victims, one may assume that he is closely familiar with medicine, and the newspapermen give him the nickname The Surgeon. During the investigation, detectives Thomas Moore and Jane Rizzoli discover that the criminal is copying the methods of a serial maniac killed two years earlier, reproducing them down to the tiniest details known to very few. They decide to meet with the surviving victim of the dead maniac — Dr. Catherine Cordell. It was she who shot her tormentor, and it seems she is becoming the copycat’s main target. With each new murder, he draws closer to her…