The Apprentice by Tess Gerritsen Page B

man as well. Maybe it’s really the man who excites him, who’s a vital part of this fantasy. Our unsub knows the risks, yet he’s compelled to carry out his impulses. His fantasies control him, and he, in turn, controls his victims. He’s all-powerful. The dominator. His enemy sits immobilized and helpless, and our unsub does what victorious armies have always done. He’s captured his prize. He rapes the woman. His pleasure is heightened by Dr. Yeager’s utter defeat. This attack is more than sexual aggression; it’s a display of masculine power. One man’s victory over another. The conqueror claiming his spoils.”
    Outside, the students on the lawn were gathering up their backpacks, brushing grass from their clothes. The afternoon sun washed everything in hazy gold. And what would the day hold next for those students? Rizzoli wondered. Perhaps an evening of leisure and conversation, pizza and beer. And a sound sleep, without nightmares. The sleep of the innocent.
    Something I’ll never again know.
    Her cell phone chirped. “Excuse me,” she said, and flipped open the phone.
    The call was from Erin Volchko, in the hair, fiber, and trace evidence lab. “I’ve examined those strips of duct tape taken off Dr. Yeager’s body,” said Erin. “I’ve already faxed the report to Detective Korsak. But I knew you’d want to know as well.”
    “What have we got?”
    “A number of short brown hairs caught in the adhesive. Limb hairs, pulled from the victim when the tape was peeled off.”
    “Fibers?”
    “Those as well. But here’s the really interesting thing. On the strip pulled from the victim’s ankles, there was a single dark-brown hair strand, twenty-one centimeters long.”
    “His wife is a blonde.”
    “I know. That’s what makes this particular strand interesting.”
    The unsub, thought Rizzoli. It’s from our killer. She asked, “Are there epithelial cells?”
    “Yes.”
    “So we might be able to get DNA off that hair strand. If it matches the semen—”
    “It won’t match the semen.”
    “How do you know that?”
    “Because there’s no way this strand came from the killer.” Erin paused. “Unless he’s a zombie.”

FOUR

    For detectives in Boston P.D.‘s homicide unit, a visit to the crime lab required only a short walk down a pleasantly sun-washed hallway to the south wing of Schroeder Plaza. Rizzoli had strode down this hall countless times, her gaze often straying to the windows that overlooked the troubled neighborhood of Roxbury, where shops were barricaded at night behind bars and padlocks and every parked car came equipped with the Club. But today, she was in single-minded pursuit of answers, and she did not even glance sideways but headed in a beeline to Room S269, the hair, fiber, and trace evidence lab.
    In this windowless room, crammed tight with microscopes and a gammatech prism gas chromatograph, criminalist Erin Volchko reigned supreme. Cut off from sunlight and outdoor views, she focused her gaze, instead, on the world beneath her microscope lens, and she had the pinched eyes, the perpetual squint, of someone who has been staring too long into an eyepiece. As Rizzoli came into the room, Erin swiveled around to face her.
    “I’ve just put it under the microscope for you. Take a look.”
    Rizzoli sat down and peered into the teaching eyepiece. She saw a hair shaft stretched horizontally across the field.
    “This is that long brown strand I recovered from the strip of duct tape binding Dr. Yeager’s ankles,” said Erin. “It’s the only such strand trapped in the adhesive. The others were short hairs from the victim’s limbs, plus one of the vic’s head hairs, on the strip taken from his mouth. But this long one is an orphan strand. And it’s quite a puzzling one. It doesn’t match either the victim’s head hair or the hairs we got from the wife’s hairbrush.”
    Rizzoli moved the field, scanning the hair shaft. “It’s definitely human?”
    “Yes, it’s