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  Praise for

  BLOODSTREAM

  By New York Times Bestselling Author

  TESS GERRITSEN

  “Gerritsen … knows how to fashion credible, dimensional characters. … Her descriptions of horror and terror … are riveting.”

  —The Los Angeles Times

  “One of the pleasures of this book is that Gerritsen takes issues that have settled in the popular consciousness—unstoppable microbes, violent teenagers—and makes a scary story out of them.”

  —Chicago Tribune

  “A Crichton-like medical thriller set on Stephen King’s home turf … [and] filled with biotech sleuthing and parental angst … BLOODSTREAM keeps the action graphic and the science straightforward.”

  —People

  “Rivals anything that Michael Palmer and Robin Cook can do. This is Tess Gerritsen’s best work yet.”

  —Amazon.com

  “Tess Gerritsen surged onto the medical thriller scene with two really brilliant and scary novels. BLOOD-STREAM, her third, is as polished as a novel can be. It is fast-paced, skillfully plotted, and full of well-constructed characters, and it has one helluva premise: What if you looked over at your teenager and saw, not the kid you know, but a stranger ready to kill?”

  —Toronto Globe and Mail

  “The twists and turns are compelling. … Keep the lights burning brightly long after you’ve set BLOODSTREAM down.”

  —The Courier-Gazette (ME)

  More Praise for

  BLOODSTREAM

  “A dynamic piece of suspense … The medical underpinnings of the plot are accurate and … if anything, too plausible.”

  —Florida Times-Union

  “[A] fascinating, well-crafted, fast-paced medical thriller.”

  —Booklist

  “Gerritsen … again has come up with a fast-paced plot and a chilling medical thriller filled with compelling characters.”

  —Abilene Reporter-News (TX)

  “[A] wicked good medical thriller … Gerritsen ratchets up the suspense.”

  —Cleveland Plain Dealer

  “Like several other doctors-turned-writers, she knows how to use medical developments to produce high drama. BLOODSTREAM and Claire Elliot are worth spending a few hours with.”

  —The Orlando Sentinel

  “A lightning-fast read and very entertaining thriller … Gerritsen builds a sense of menace around the ‘perfect’ town.”

  —Flint Journal (MI)

  “Ingeniously invent[ive] … Weirdly terrific stuff with a steel grip.”

  —Kirkus Reviews

  “First-rate … Gerritsen has done it again … [BLOOD-STREAM] takes readers on a wild ride. … Gerritsen is on a par with the likes of Robin Cook and Michael Palmer.”

  —Lincoln Journal Star (NE)

  Critical Acclaim for TESS GERRITSEN’S

  Thrilling Bestsellers

  LIFE SUPPORT

  “Grabs you and holds you from page one. … Be prepared to drop all your obligations until you finish.”

  —John Saul

  “Richly drawn hospital scenes … Chilling science … and breathless ER-style pacing make Life Support a quick, delightfully scary read.”

  —People

  “[A] spine-tingling medical chiller. … The pieces in this adeptly crafted medical Rubik’s cube don’t click into place until the final page.”

  —Publishers Weekly

  “Shocking … Gerritsen again parlays professional knowledge, a snappy writing style, and offbeat characters into an entertaining thriller.”

  —San Jose Mercury News

  HARVEST

  “Harvest will make your heart skip a beat.”

  —USA Today

  “Harrowing … Harvest quite literally has gut-level impact.”

  —San Francisco Chronicle

  “Only a riveting storyteller who is also a physician could have written this book. Harvest is a nonstop, terrifying read.”

  —Michael Palmer, M.D., bestselling author of Miracle Cure

  “Harvest generates its own very high level of fear and excitement.”

  —Chicago Tribune

  “Harvest offers suspense as sharp as a scalpel’s edge. A pageturning, hold-your-breath read.”

  —Tami Hoag, bestselling author of A Thin Dark Line

  Also by Tess Gerritsen

  Harvest

  Life Support

  Published by POCKET BOOKS

  For orders other than by induvidual consumers, Pocket Books grants a discount on the purchase of 10 or more copies of single titles for special markets or Premium use. For further details, please write to the Vice President of Special Markets, Pocket Books, 1230 Avenue of the Americas, 9th floor, New York, NY 10020-1586.

  For information on how individual consumers can place orders, please write to Mail Order Department, Simon & Schuster Inc., 200 Old Tappan Road, Old Tappan, NJ 07675.

  This book is a work of fiction. Names, characters, places and incidents are products of the author’s imagination or are used fictitiously. Any resemblance to actual events or locales or persons, living or dead, is entirely coincidental

  Originally published in hardcover in 1998 by Pocket Books

  POCKET BOOKS, a division of Simon & Schuster Inc.

  1230 Avenue of the Americas, New York, NY

  www.SimonandSchuster.com

  Copyright © 1998 by Tess Gerritsen

  All rights reserved, including the right to reproduce this book or portions thereof in any form whatsoever. For information address Pocket Books, 1230 Avenue of the Americas, New York, NY 10020

  ISBN: 0-671-01676-8

  eISBN-13: 978-1-4391-4078-9

  ISBN-13: 978-0-6710-1676-0

  First Pocket Books paperback printing August 1999

  10 9 8 7 6 5 4 3 2 1

  POCKET and colophon are registered trademarks of Simon & Schuster Inc.

  Cover art by Tom Hallman

  Printed in the U.S.A.

  To Tim and Elyse

  ACKNOWLEDGMENTS

  I owe many thanks to:

  My husband Jacob, still my best friend after all these years.

  Meg Ruley, my guardian angel and miracle worker. You walk on water.

  Jane Berkey and Don Cleary for their guiding voices.

  My superb editor, Emily Bestler.

  The ladies of the breakfast club for delivering my weekly dose of sanity.

  The memory of Rockport Police Chief Perley Sprague. Your kindness was an inspiration.

  And finally, to the town of Camden, Maine, the best place on earth a writer could call home. Please rest assured this book is not about you.

  BLOODSTREAM

  T

  PROLOGUE

  TRANQUILITY, MAINE, 1946

  If she was still enough, quiet enough, he would not find her. He might think he knew all her hiding places, but he had never discovered her secret niche, this small hollow in the cellar wall, concealed by the shelves of her mother’s canning jars. As a young child she had easily slipped into this space, and every game of hide and seek had found her curled up in her lair, giggling at his frustration as he thumped from room to room, searching for her. Sometimes the game would go on so long she’d fall asleep, and would awaken hours later to the sound of her mother’s voice worriedly calling her name.

  Now here she was again, in her cellar hiding place, but she was no longer a child. She was fourteen and barely able to squeeze into the niche. And this was no lighthearted game of hide and seek.

  She could hear him upstairs, roaming the house, searching for her. He rampaged from room to room, cursing, slamming furniture to the floor.

  Please, please, please. Someone help us. Someone make him go away.

  She heard him roar out her name: “IR
IS!” His footsteps creaked into the kitchen. Approached the cellar door. Her hands balled into tight fists, and her heart was a banging drum.

  I am not here. I am far away, escaping, soaring into the night sky …

  The cellar door flew open, slamming into the wall. Golden light shone down, framing him in the open doorway at the top of the stairs.

  He reached up to pull on the light chain and the bare bulb came on, dimly illuminating the cavernous cellar. Cowering behind the jars of home-canned tomatoes and cucumbers, Iris heard him descend the steep stairs, each creak bringing him toward her. She pressed deeper into the hollow, flattening herself against the crumbling stone and mortar, and closed her eyes, willing herself to be invisible. Through the slamming of her own heartbeat she heard him reach the bottom of the steps.

  Don’t see me. Don’t see me.

  The footsteps moved right past the canning shelves and headed toward the far end of the cellar. She heard him kick over a box. Empty jars shattered on the stone floor. Now he was circling back, and she could hear his harsh breathing, punctuated by animal grunts. Her own breaths were coming short and fast, her hands clenched so tightly she thought her bones would shatter. The footsteps moved to the canning shelves and stopped.

  Her eyes shot open, and through a chink between two jars she saw him standing right in front of her. She had slid down until her gaze was level with his belt. She cringed even lower, dropping as far below his line of sight as she could. He took a jar off the shelf and smashed it to the ground. The smell of pickles, sharp and vinegary, rose up from the stone floor. He reached for a second jar, then suddenly put it back, as though a better thought had occurred to him. He turned and walked up the cellar steps, yanking the light chain as he exited.

  Once again she was in darkness.

  She realized she had been crying. Her face was wet, sweat mingling with tears, but she didn’t dare release even a whimper.

  Upstairs the footsteps creaked toward the front of the house and then there was silence.

  Had he left? Had he finally gone away?

  She remained frozen, not daring to move. The minutes went by. She counted them off slowly in her head. Ten. Twenty. Her muscles were cramping, the spasms so painful she had to bite her lip to keep from crying out.

  An hour.

  Two hours.

  Still no sound from above.

  Slowly she emerged from the hiding place. She stood in the darkness, waiting for the blood to recirculate in her muscles, for the feeling to come back in her legs. Listening, the whole time listening.

  She heard nothing.

  The cellar had no window, and she didn’t know if it was still dark outside. She stepped through the broken glass on the floor and crossed to the stairs. She climbed them one at a time, pausing after each step to listen some more. When at last she reached the top, her palms were so slick she had to wipe them off on her blouse before she could open the cellar door.

  The lights were on in the kitchen, and everything looked startlingly normal. She could almost believe the horror of last night was simply a bad dream. A clock ticked loudly on the wall. It was five A.M., still dark outside.

  She tiptoed to the kitchen doorway and peered into the hall. One glimpse at the splintered furniture, the splashes of blood on the wallpaper, told her she had not been dreaming. Her palms were wet again.

  The hallway was deserted, and the front door hung open.

  She had to get out of the house. Run to the neighbors, run to the police.

  She started up the hall, each step bringing her closer to escape. Terror had primed her five senses to such acuity that she registered every fragment of splintered wood on the floral carpet, every tick of the clock in the kitchen behind her. She was almost at the front door.

  Then she cleared the banister and came within view of the stairs, where her mother had toppled, head down. She couldn’t stop herself from staring at the body. At her mother’s long hair draping the steps, like black water rippling downhill.

  Nausea surging up her throat, she lurched toward the front door.

  He was standing there. In his hand was an ax.

  With a sob she spun around and darted up the stairs, almost slipping on her mother’s blood. She heard him pounding up the steps after her. She had always been faster than he, and terror made her fly up the stairs like a panicked cat.

  On the second floor landing she caught a glimpse of her father’s body, lying halfway out of his bedroom doorway. There was no time to think about it, no time to absorb the horror; she was already dashing up the next flight of stairs and into the turret room.

  She slammed the door and latched it just in time.

  He gave a roar of rage and began pounding on the closed door.

  She scurried over to the window and forced it open. Staring down at the ground far below, she knew she could not survive a fall. But there was no other way out of the room.

  She yanked on a curtain, pulling it off the rod. A rope. Have to make a rope! She tied one end to a radiator pipe, wrenched a second curtain down, and tied the two lengths of fabric together.

  A loud thud sent a splinter of wood flying at her. She glanced back and to her horror saw the tip of the ax poking through the door. Saw it pried loose again for the next swing.

  He was breaking through!

  She yanked down a third curtain, and with shaking hands, knotted it to the first two.

  The ax came down again. The wood splintered wider, more chunks flying.

  She yanked down a fourth curtain, but even as she frantically tied the last knot, she knew the rope was not long enough. She knew it was too late.

  She spun around to face the door just as the ax broke through.

  1

  THE PRESENT

  “Someone’s going to get hurt out there,” said Dr. Claire Elliot, looking out her kitchen window. Morning mist, thick as smoke, hung over the lake, and the trees beyond her window drifted in and out of focus. Another gunshot rang out, closer this time. Since first light, she’d heard the gunfire, and would probably hear it all day until dusk, because it was the first day of November. The start of hunting season. Somewhere in those woods, a man with a rifle was tramping around half-blind through the mist as imagined shadows of white-tailed deer danced around him.

  “I don’t think you should wait outside for the bus,” said Claire. “I’ll drive you to school.”

  Noah, hunched at the breakfast table, said nothing. He scooped up another spoonful of Cheerios and slurped it down. Fourteen years old, and her son still ate like a two-year-old, milk splashing on the table, crumbs of toast littering the floor around his chair. He ate without looking at her, as though to meet her gaze was to come face to face with Medusa. And what difference would it make if he did look at me, she thought wryly. My darling son has already turned to stone.

  She said again, “I’ll drive you to school, Noah.”

  “That’s okay. I’m taking the bus.” He stood up and grabbed his backpack and skateboard.

  “Those hunters out there can’t possibly see what they’re shooting at. At least wear the orange hat. So they won’t think you’re a deer.”

  “But it looks so dorky.”

  “You can take it off on the bus. Just put it on now.” She took the knit cap from the mitten shelf and held it out to him.

  He looked at it, then finally, at her. He had sprouted up several inches in just one year, and they were now the same height, their gazes meeting straight on, neither one able to claim the advantage. She wondered if Noah was as acutely aware of their new physical equality as she was. Once she could hug him and a child would hug back. Now the child was gone, his softness resculpted into muscle, his face narrowed to a sharp new angularity.

  “Please,” she said, still holding out the cap.

  At last he sighed and jammed the cap over his dark hair. She had to suppress a smile; he did look dorky.

  He had already started down the hallway when she called out: “Good-bye kiss?”

/>   With a look of exasperation, he turned to give her the barest peck on the cheek, and then he was out of the door.

  No hugs anymore, she thought ruefully as she stood at the window and watched him trudge toward the road. It’s all grunts and shrugs and awkward silences.

  He stopped beneath the maple tree at the end of the driveway, pulled off the cap, and stood with his hands in his pockets, shoulders hunched against the cold. No jacket, just a thin gray sweatshirt against a thirty-seven-degree morning. It was cool to be cold. She had to resist the urge to run outside and bundle him into a coat.

  Claire waited until the school bus appeared. She watched her son climb aboard without a backward glance, saw his silhouette move down the aisle and take a seat beside another student—a girl. Who is that girl? she wondered. I don’t know the names of my son’s friends anymore. I’ve shrunk to just a small corner of his universe. She knew this was supposed to happen, the pulling away, the child’s struggle for independence, but she was not prepared for it. The transformation had occurred suddenly, as though a sweet boy had walked out of the house one day, and a stranger had walked back in. You’re all I have left of Peter. I’m not ready to lose you as well.

  The bus rumbled away.

  Claire returned to the kitchen and sat down to her cup of lukewarm coffee. The house felt hollow and silent, a home still in mourning. She sighed and unrolled the weekly Tranquility Gazette. HEALTHY DEER HERD PROMISES BOUNTIFUL HARVEST, announced the front page. The hunt was on. Thirty days to bag your deer.

  Outside, another gunshot echoed in the woods.

  She turned the page to the police blotter. There was no mention yet of last night’s Halloween disturbance, or of the seven rowdy teenagers who’d been arrested for taking their annual trick-or-treating too far. But there, buried among the reports of lost dogs and stolen firewood, was her name, under VIOLATIONS: “Claire Elliot, age forty, operating vehicle with expired safety sticker.” She still hadn’t brought the Subaru in for its safety inspection; today she’d have to drive the truck instead, just to avoid getting another citation. Irritably she flipped to the next page and was scanning the day’s weather forecast—cold and windy, high in the thirties, low in the twenties—when the telephone rang.