A Trace, Not a Truth

A fingerprint on a glass. DNA on a weapon. Blood on clothing. Fibres linking two places. A phone near the scene. They sound like answers. In reality, they are often the beginning of the questions. A Trace, Not a Truth takes readers inside the fascinating world of forensic evidence to explain what DNA, fingerprints, bloodstains, fibres, firearms evidence, toxicology, autopsies, digital records and other traces can genuinely tell investigators-and where their limits begin. Written for true-crime readers rather than laboratory specialists, Sky Adler strips away the technical jargon and explores the difference between finding evidence and interpreting it. Can DNA reveal how it got somewhere? Can a fingerprint tell us when it was left? Does gunshot residue prove someone fired a weapon? Can an autopsy pinpoint an exact time of death? And when an expert says the odds are one in a billion, what does that number actually mean? Along the way, the book examines transfer, contamination, probability, human judgement, laboratory error, wrongful conclusions and the forensic evidence that can exclude the innocent as powerfully as it can implicate a suspect. For anyone who watches true crime and has ever heard the words the evidence matched, this book asks the more important question: Matched-but what does it actually prove? Disclaimer: This book is intended for general educational and informational purposes only and does not constitute legal, medical, investigative or professional forensic advice. Any trademarks, product names or registered names mentioned remain the property of their respective owners; their inclusion does not imply affiliation, sponsorship or endorsement.