International bestselling author Tess Gerritsen gave up a career as a practising physician to write full time. She draws upon her experiences to bring all the tension and terrors of her thrillers to life. She lives in Camden, Maine, with her physician husband and two sons.

      Also available from MIRA Books and Tess Gerritsen

      CALL AFTER MIDNIGHT

      UNDER THE KNIFE IN THEIR FOOTSTEPS PRESUMED GUILTY NEVER SAY DIE MURDER & MAYHEM STOLEN

      TESS GERRITSEN

      WHISTLE BLOWER

      To Fiens and Frans

       PROLOGUE

      BRANCHES whipped his face, and his heart was pounding so hard he thought his chest would explode, but he couldn’t stop running. Already, he could hear the man gaining on him, could almost imagine the bullet slicing through the night and slamming into his back. Maybe it already had. Maybe he was trailing a river of blood; he was too numb with terror to feel anything now, except the desperate hunger to live. The rain was pouring down his face, icy, blinding sheets of it, rattling on the dead leaves of winter. He stumbled through a pool of darkness and found himself sprawled flat on his belly in the mud. The sound of his fall was deafening. His pursuer, alerted by the sharp crack of branches, altered course and was now headed straight for him. The thud of a silencer, the zing of a bullet past his cheek, told him he’d been spotted. He forced himself to his feet and made a sharp right, zigzagging back toward the highway. Here in the woods, he was a dead man. But if he could flag down a car, if he could draw someone’s attention, he might have a chance.

      A crash of branches, a coarse oath, told him his pursuer had stumbled. He’d gained a few precious seconds. He kept running, moving only by an instinctive sense of direction. There was no light to guide his way, nothing except the dim glow of the clouds in the night sky. The road had to be just ahead. Any second now, his feet would hit pavement.

      And then what? What if there’s no car to flag down, no one to help me?

      Then, through the trees ahead, he saw a faint flickering, two watery beams of light.

      With a desperate burst of speed, he sprinted toward the car. His lungs were on fire, his eyes blinded by the lash of branches and rain. Another bullet whipped past him and thudded into a tree trunk, but the gunman behind him had suddenly lost all importance. All that mattered was those lights, beckoning him through the darkness, taunting him with the promise of salvation.

      When his feet suddenly hit the pavement, he was shocked. The lights were still ahead, bobbing somewhere beyond the trees. Had he missed the car? Was it already moving away, around a curve? No, there it was, brighter now. It was coming this way. He ran to meet it, following the bend of the road and knowing all the time that here in the open, he was an easy target. The sound of his shoes slapping the wet road filled his ears. The lights twisted toward him. At that instant, he heard the gun fire a third time. The force of the impact made him stumble to his knees, and he was vaguely aware of the bullet tearing through his shoulder, of the warmth of his own blood dribbling down his arm, but he was oblivious to pain. He could focus only on staying alive. He struggled back to his feet, took a stumbling step forward…

      And was blinded by the onrush of headlights. There was no time to throw himself out of the way, no time even to register panic. Tires screamed across the pavement, throwing up a spray of water.

      He didn’t feel the impact. All he knew was that he was suddenly lying on the ground and the rain was pouring into his mouth and he was very, very cold.

      And that he had something to do, something important.

      Feebly, he reached into the pocket of his windbreaker, and his fingers curled around the small plastic cylinder. He couldn’t quite remember why it mattered so much, but it was still there and he was relieved. He clutched it tightly in his palm.

      Someone was calling to him. A woman. He couldn’t see her face through the rain, but he could hear her voice, hoarse with panic, floating through the buzz in his head. He tried to speak, tried to warn her that they had to get away, that death was waiting in the woods. But all that came out was a groan.

      CHAPTER ONE

      THREE miles out of Redwood Valley, a tree had fallen across the road, and with the heavy rains and backed-up cars, it took Catherine Weaver nearly three hours to get past the town of Willits. By then it was already ten o’clock and she knew she wouldn’t reach Garberville till midnight. She hoped Sarah wouldn’t sit up all night waiting for her. But knowing Sarah, there’d be a supper still warm in the oven and a fire blazing in the hearth. She wondered how pregnancy suited her friend. Wonderfully, of course. Sarah had talked about this baby for years, had chosen its name—Sam or Emma—long before it was conceived. The fact she no longer had a husband was a minor point. “You can only wait around so long for the right father,” Sarah had said. “Then you have to take matters into your own hands.”

      And she had. With her biological clock furiously ticking its last years away, Sarah had driven down to visit Cathy in San Francisco and had calmly selected a fertility clinic from the yellow pages. A liberal-minded one, of course. One that would understand the desperate longings of a thirty-nine-year-old single woman. The insemination itself had been a coolly clinical affair, she’d said later. Hop on the table, slip your feet into the stirrups, and five minutes later, you were pregnant. Well, almost. But it was a simple procedure, the donors were certifiably healthy, and best of all, a woman could fulfill her maternal instincts without all that foolishness about marriage.

      Yes, the old marriage game. They’d both suffered through it. And after their divorces, they’d both carried on, albeit with battle scars.

      Brave Sarah, thought Cathy. At least she has the courage to go through with this on her own.

      The old anger washed through her, still potent enough to make her mouth tighten. She could forgive her ex-husband Jack for a lot of things. For his selfishness. His demands. His infidelity. But she could never forgive him for denying her the chance to have a child. Oh, she could have gone against his wishes and had a baby anyway, but she’d wanted him to want one as well. So she’d waited for the time to be right. But during their ten years of marriage, he’d never been “ready,” never felt it was the “right time.”

      What he should have told her was the truth: that he was too self-centered to be bothered with a baby.

      I’m thirty-seven years old, she thought. I no longer have a husband. I don’t even have a steady boyfriend. But I could be content, if only I could hold my own child in my arms.

      At least Sarah would soon be blessed.

      Four months to go and then the baby was due. Sarah’s baby. Cathy had to smile at that thought, despite the rain now pouring over her windshield. It was coming down harder now; even with the wipers thrashing at full speed, she could barely make out the road. She glanced at her watch and saw it was already eleven-thirty; there were no other cars in sight. If she had engine trouble out here, she’d probably have to spend the night huddled in the backseat, waiting for help to arrive.

      Peering ahead, she tried to make out the road’s dividing line and saw nothing but a solid wall of rain. This was ridiculous. She really should have stopped at that motel in Willits, but she hated the thought of being only fifty miles from her goal, especially when she’d already driven so far.

      She spotted a sign ahead: Garberville, 10 Miles. So she was closer than she’d thought. Twenty-five miles more, then there’d be a turnoff and a five-mile drive through dense woods to Sarah’s cedar house. The thought of being so close fueled her impatience. She fed the old Datsun