Autopsies:
Abby's autopsy came first.[. She suffered only a single wound to the left side of her neck, a cut about two inches in length and an inch deep. That had partially opened up her left jugular vein. Based on the edges of the wound, the killer had likely inflicted it from right to left. Because the injury involved a vein, the bleeding out was slow. Abby could have held on for five or ten minutes. She had no defensive wounds, no bruising, no other incisions, although her arms and hands were frozen in an almost pugilistic attitude. While Abby's body bore no obvious ligature marks, there were two faint lines across her face. A mark ran between her chin and lower lip, and another dipped below her chin. [Investigator] determined that the lines were left periimortem, around the time of her death. He thought the markings resembled the edges of duct tape, but no adhesive residue had been left behind.
Libby's injuries were more extensive. [Investigator] found four, or maybe five, separate incisions across her throat. Her left and right carotid arteries and her left jugular vein were completely severed. At least two incisions overlapped, and the abrasions told the forensic pathologist that the killer had drawn the knife back and forth several times across Libby's throat. [Investigator] noted that the girl had suffered a cerebral edema, or swelling of the brain. That was evidence that Libby could have lived five to ten minutes with her throat cut. She also had no defensive wounds."
Shadow of the Bridge
Abby's autopsy came first.[. She suffered only a single wound to the left side of her neck, a cut about two inches in length and an inch deep. That had partially opened up her left jugular vein. Based on the edges of the wound, the killer had likely inflicted it from right to left. Because the injury involved a vein, the bleeding out was slow. Abby could have held on for five or ten minutes. She had no defensive wounds, no bruising, no other incisions, although her arms and hands were frozen in an almost pugilistic attitude. While Abby's body bore no obvious ligature marks, there were two faint lines across her face. A mark ran between her chin and lower lip, and another dipped below her chin. [Investigator] determined that the lines were left periimortem, around the time of her death. He thought the markings resembled the edges of duct tape, but no adhesive residue had been left behind.
Libby's injuries were more extensive. [Investigator] found four, or maybe five, separate incisions across her throat. Her left and right carotid arteries and her left jugular vein were completely severed. At least two incisions overlapped, and the abrasions told the forensic pathologist that the killer had drawn the knife back and forth several times across Libby's throat. [Investigator] noted that the girl had suffered a cerebral edema, or swelling of the brain. That was evidence that Libby could have lived five to ten minutes with her throat cut. She also had no defensive wounds."
Shadow of the Bridge