Silent Witnesses
First published in Great Britain in 2013 by Random House Books
This edition published in 2014 by Chicago Review Press Incorporated
All rights reserved
Chicago Review Press Incorporated
814 North Franklin Street
Chicago, Illinois 60610
ISBN 978-1-61373-002-7
Library of Congress Cataloging-in-Publication Data
McCrery, Nigel, 1953–
Silent witnesses : the often gruesome but always fascinating history of forensic science / Nigel McCrery.
pages cm
“First published in Great Britain in 2013 by Random House Books.”
Includes index.
Summary: “Crime novelist and former police officer Nigel McCrery provides an account of all the major areas of forensic science from around the world over the past two centuries. The book weaves dramatic narrative and scientific principles together in a way that allows readers to figure out crimes along with the experts. Readers are introduced to such fascinating figures as Dr. Edmond Locard, the “French Sherlock Holmes;” Edward Heinrich, “Wizard of Berkeley,” who is credited with having solved more than 2,000 crimes; and Alphonse Bertillon, the French scientist whose guiding principle, “no two individuals share the same characteristics,” became the core of criminal identification. Landmark crime investigations examined in depth include a notorious murder involving blood evidence and defended by F. Lee Bailey, the seminal 1936 murder that demonstrated the usefulness of the microscope in examining trace evidence, the 1849 murder of a wealthy Boston businessman that demonstrated how difficult it is to successfully dispose of a corpse, and many others”—Provided by publisher.
Summary: “Through examinations of specific cases throughout history, crime novelist and former police officer Nigel McCrery explores the gruesome but fascinating history and progress of forensic science around the world”—Provided by publisher.
ISBN 978-1-61373-002-7 (paperback)
1. Forensic sciences—History. 2. Forensic sciences—Case studies. 3. Criminal investigation—Case studies. I. Title.
HV8073.M3323 2014
363.2509—dc23
2014006713
Typeset in Adobe Garamond Pro by Palimpsest Book Production Limited Falkirk, Stirlingshire
Cover design: Natalya Balnova
Cover photo: © STOCK4B GmbH / Alamy
Printed in the United States of America
5 4 3 2 1
Dedicated to Professor Helen Whitwell, my friend and the inspiration for the series Silent Witness. The real Sam Ryan.
Contents
Author’s Note
Introduction
1 Identity
2 Ballistics
3 Blood
4 Trace Evidence
5 The Body
6 Poisons
7 DNA
Index
Author’s Note
My interest in forensic science was first piqued after joining the Nottinghamshire, England, police force in 1978, at the age of twenty-five. Watching the scientists and quite often the pathologists do their work always fascinated me. I was greatly impressed that they could glean so much information from such a small amount of evidence. Observing a well-conducted postmortem made me feel much the same. The information that could be recovered from a dead body, even one in an advanced state of decay, could quite easily lead to the identification and arrest of a murderer. This fascination has only grown over the years and has, until now, found expression mainly in works of fiction, including several Silent Witness crime novels and a BBC forensics drama by the same name.
In the course of my work I have found the following books to be invaluable to my understanding and appreciation of forensics, and to these books and authors I owe acknowledgment and gratitude: The Encyclopedia of Modern Murder by Arthur Baker, Fingerprints by Douglas G. Brown and Alan Brock, The Age of Sex Crime by Jane Elizabeth Caputi, The Casebook of Forensic Detection by Colin Evans, Memories of Murder by Tony Fletcher, Murder Whereabouts and The Murderers’ Who’s Who by J. H. H. Gaute and Robin Odell, The Other Mr. Churchill by Macdonald Hastings, Before Scotland Yard by Peter Haworth, Francis Camps: Famous Case Histories of the Most Celebrated Pathologist of Our Time by Robert Jackson, The Airman and the Carpenter by Ludovic Kennedy, The Scientific Investigation of Crime by Stuart Kind, The Principles and Practice of Blood Grouping by C. V. Mosby, Serial Killers by Joel Norris, Crime and Criminals by Harold Scott, Crime Scientist by John Thompson, The Encyclopedia of American Crime by Carl Sifakis, Forty Years of Murder by Keith Simpson, Clues to Murder: Forensic Murder Investigation of Professor J. M. Cameron by Tom Tullet, Expert Witness: My Thirty Years in Forensic Science by H. J. Walls, The Blooding by Joseph Wambaugh, and Written in Blood by Colin Wilson and Damon Wilson.
Introduction
Murder has a magic all of its own.
William Roughhead, Scottish criminologist (1870–1952)
The morning of November 21, 1983, dawned cold. The wind was bitter, the sky dark and bleak. On her mother’s advice, fifteen-year-old Lynda Mann dressed warmly before leaving for school. She wore denim jeans over a pair of tights, a thick sweater, white socks, and black tennis shoes. Before leaving the house, she also pulled on her new jacket and stuffed a warm scarf into her pocket.
Lynda lived in Narborough, England, a village about six miles from the Leicester city center. It was what Lynda’s mother, Kathleen, described as “a real English village.” Kathleen, divorced, had been a city dweller for most of her life but had settled there with Lynda and her other daughter, Susan, after falling in love with the place. In 1980 she married Eddie Eastwood, a former soldier, and they became a happy family of four.
Lynda herself was an attractive, dark-haired girl with pale skin. She was outgoing, bubbly, and enthusiastic. She was doing well at school, was studying several languages, and was determined to travel widely as soon as she was able. She seemed to love life. As so often seems to be the case in situations like this, she didn’t have an enemy in the world.
After school that day, Lynda returned home for a quick meal with her stepfather before going back out into the village. She went to visit her friend Karen Blackwell for a short while, before moving on to the home of another friend to collect a record she had lent her. This girl, Caroline, lived in Enderby, a fifteen-minute walk from Karen Blackwell’s, close to a secluded footpath known locally as the Black Pad. It was as Lynda made her way back from here that she noticed a figure standing by a lamppost, not far from the gate to the Carlton Hayes psychiatric hospital.
At 1:30 AM, Lynda had still not returned home. Growing increasingly concerned, her stepfather drove around the village in search of her. He visited various local hangouts including the Black Pad. When this proved fruitless, he went to Braunstone Police Station and reported Lynda missing. The police took down her details but weren’t overly concerned since she hadn’t been missing for very long. Eddie Eastwood then went back home to wait. What he didn’t know was that when he was searching the Black Pad, he had been only feet away from making a horrible discovery.
The following morning a hospital orderly on his way to work decided to take a shortcut across the Black Pad. As he did so, he noticed what he thought at first was a partly clothed mannequin lying on the grass near a clump of trees. The body was as white as marble and rigid. As he approached, he realized that it wasn’t a dummy at all; it was a young girl. He had discovered the body of Lynda Mann.
The police were called and Detective Chief Superintendent David Baker attended. At 8:30 AM on November 22, 1983, the murder inquiry had officially begun.
The case would go on to become a landmark in the history of forensic science. By a strange coincidence, the technology that was to
prove decisive in solving it was developed only a few miles from Narborough, at the University of Leicester, roughly a year after Lynda’s tragic death.
Dr. Alec Jeffreys (now Sir Alec) was a graduate of Merton College, Oxford, where he studied biochemistry. He remained in Oxford to study for his PhD and, after receiving it, worked for a short spell as a research fellow at the University of Amsterdam, before moving to the University of Leicester in 1977.
It was on September 10, 1984, that Jeffreys made a revolutionary discovery. While examining an X-ray film image of a DNA experiment, he happened to notice that the DNA of different members of his technician’s family showed both significant similarities and significant differences. Jeffreys quickly realized the importance of this: that individuals could be identified by the unique variations in their genetic code. Every person has their own genetic “fingerprint.” This meant that any genetic material—such as hair, skin cells, or bodily fluids—could now theoretically be matched with the person from whom it came.
When Lynda’s body was discovered, a pathologist was called to the scene. During the course of their examination they noted “matted seminal stains on the vulva hair”—something that would later come to be highly significant. After she had been identified by her stepfather, a postmortem was carried out. It was established that intercourse had been attempted and that premature ejaculation had occurred. Penetration had also taken place after this and prior to death. Semen was recovered from a deep vaginal swab. The official cause of death was recorded as asphyxia due to strangulation.
The semen was subjected to a phosphoglucomutase (PGM) grouping test. It was also antigen-tested and found to have come from a blood group A secretor—someone from blood group A who secretes antigens from their blood into other bodily fluids such as semen or saliva. The science here is complicated; it is enough for our purposes to know that this meant that the killer was a Group A secretor PGM1+. This was the first breakthrough, as this description would apply to only one male in ten in the United Kingdom. On its own, this information couldn’t absolutely identify the killer, but it was useful as it allowed the police to eliminate suspects—Eddie Eastwood’s innocence was confirmed in this way, for example. (He was never really under suspicion but in such cases the immediate family always needs to be checked out.) However, they seemed no closer to catching the culprit. Leads came and went, suspects were interviewed and allowed to go free. The investigation went on.
Lynda’s body was finally released, and she was buried at All Saints Church on February 2, 1984. By April that year, the number of active officers on the case had fallen from 150 to eight. The incident room was closed and in the summer the inquiry was shut down altogether. During the inquiry, 150 blood tests had been carried out, but they had all come to nothing.
As time moved on, although the memory of Lynda Mann didn’t disappear from the consciousness of the village, it did dim a little. The fact that nobody had been held accountable kept awareness of the murder alive, but the fact that there had been no further incidents did help the tragic occurrences of November 1983 seem more distant. In July 1986, however, all that would change in the most tragic of circumstances.
Robin and Barbara Ashworth lived with their two children, Dawn and Andrew, in the village of Enderby, near Narborough. They were a close, loving family. Dawn was fifteen years old and had bright, expressive hazel eyes. She was not particularly academic but possessed a strong artistic streak. To supplement her pocket money, Dawn had a part-time job working in a newsstand.
At 3:30 PM on July 31, 1986, Dawn came home after work. She changed quickly and was about to head back out to see her friends when her mother reminded her that she had to be home by 7 PM as they were going to the birthday party of a family friend. As a result of this, Dawn decided to go to buy some candy as a gift. When she left the house she was wearing a white polo-neck sweater covered by a loose-fitting multicolored blouse with a white flared skirt and white canvas pumps. She was also carrying a blue denim jacket.
Dawn bought the sweets, and her friends last saw her at approximately 4 PM heading towards Ten Pound Lane, a country path that was a shortcut between Enderby and Narborough. On her way she called on several friends, only to discover from their families that they were already out. If only this had not been the case, an awful tragedy might have been averted. I have read of—and been involved in—many cases where chance has played a significant role in the way that events unfolded. It is a powerful governing force in all our lives—and deaths.
Dawn began to make her way home along Ten Pound Lane.
When she wasn’t home by 7 PM to attend the party, her parents began to worry. It wasn’t like her to be late; she was normally very reliable. Her mother discovered that she had left her friend’s house at 4:30 PM and hadn’t been seen since, which increased their concern. They reported her missing to the police but were told to wait a little longer—it wasn’t unusual for a teenage girl to go missing for a few hours. Dawn’s parents knew that, in her case, it was.
By 9:30 PM there was still no sign of her, and her father went out to search for her. He scoured the local streets and the footpaths and, just like Eddie Eastwood three years before, walked past the very spot where his daughter was lying without seeing her.
The following day, Friday, August 1, the police finally took action, and the Narborough area was alive with search teams and dogs.
As is normal in such cases, both Robin and Barbara Ashworth were interviewed at length and their house and yard carefully searched. During this time they were also subjected to anonymous silent phone calls, adding to their anguish. The papers were full of the search and included a personal plea from her father for Dawn to be returned safely.
On August 2, a police sergeant discovered a denim jacket close to Ten Pound Lane with a lipstick and a pack of cigarettes in the pocket. The area was immediately sealed off, and before noon a body was discovered near a clump of blackthorn bushes next to Ten Pound Lane. The body was naked from the waist down, just like Lynda Mann’s had been. The police knew at once who they had found, though it fell to her father to make the official identification. With this done, at 6:30 PM the postmortem commenced. The pathologist established the cause of death as asphyxia due to manual strangulation, probably by having an arm hooked around her throat. She had been raped and sodomized, most likely after death.
The inquiry followed the normal pattern: interviews, door-to-door enquiries, reenactments, appeals. As the police sifted through the intelligence they had gathered, they realized that they had a promising lead. At least four witnesses had reported seeing a man on a red motorcycle or wearing a red crash helmet. Sightings of this man and his bike were made at various times and in various places. He was seen under a nearby bridge at noon, and a different witness saw him there again at around quarter to five. A third witness saw the bike on Ten Pound Lane at 5:15 PM and a fourth reported seeing the bike being ridden up and down Mill Lane on the evening Dawn’s body was discovered, as though the rider were taking a keen interest in the inquiry.
A seventeen-year-old boy, who worked as an orderly at the Carlton Hayes Hospital, was seen by a local police officer pushing a motorcycle. He was stopped and, after he admitted having seen Dawn shortly before she disappeared, was brought in for questioning.
On the following Thursday, August 7, a witness contacted the inquiry team and told them that the same boy, who was his colleague at the Carlton Hayes Hospital, had told him that the police had discovered Dawn’s body in a hedge by the M1 highway bridge, hanging from a tree. While this last detail was not true, the rest of the description was uncannily accurate, considering that the police had not yet released this information. Another witness then came forward and explained that the boy had told him, only hours after it happened, that Dawn’s body had been discovered, again before the police had made an official announcement. It was also alleged that he had acted inappropriately with several women in the past, and that he had told one he was the last person to see Dawn
Ashworth alive. One of these witnesses had also noticed scratch marks on his hand when they spoke.
As a result of all this information, Detective Sergeant Dawe and Detective Constable Cooke from the inquiry visited the boy at his house in Narborough and arrested him in connection with the murder of Dawn Ashworth. He was driven to Wigstone Police Station where he underwent a series of interviews conducted by various members of the inquiry team. Over many hours he was gradually worn down until at last he admitted to the murder of Dawn Ashworth. Many of his admissions were contradictory and more than a little vague, but when he was eventually presented with a statement admitting that he had carried out the murder, he signed it. He was then removed to Winson Green Prison in the nearby city of Birmingham.
With her killer safely behind bars, four weeks after her murder, Dawn Amanda Ashworth was finally laid to rest in the churchyard of St. John’s Baptist Church in Enderby.
Now that they were sure they had their man, the police wanted to make a definite link between Dawn’s murder and that of Lynda Mann. It was something the press had already been speculating about. However, there were flaws in the case against the boy. He had given blood and it was quickly established that he was not a Group A secretor PGM1+, something the police had placed a great deal of emphasis on when looking for the killer. But a forensic scientist reassured them by telling them that they were only dealing with maybes and suggesting such things were perhaps not a “precise” science. The boy’s mother had given him a strong alibi for the evening of Dawn’s murder, but this was also dismissed on the grounds that she was a far from disinterested party. In retrospect it seems likely that the police were so relieved to have someone locked up for the crime, and so swayed by the circumstantial evidence against him, that they ignored what were actually real problems with the case.
Exactly what happened next is open to debate. In the end it depends who you believe. The boy’s father maintains he had heard of the development of genetic fingerprinting and asked his son’s lawyer to look into it. The police, on the other hand, maintain it was their idea to try to prove once and for all that they had the right man. It will never be clear who put forward the idea of using this new technology in the case, but put forward it was. Dr. Alec Jeffreys’s work came into play. This was to be the decisive development in the cases of both Lynda Mann and Dawn Ashworth.