Book excerpt: Firearm and Tool Mark Identification: The Scientific Reliability of the Forensic Science Discipline examines the scientific reliability of the firearm and tool mark identification discipline (FATM-ID). It answers two primary questions that are necessary to assess the reliability of FATM-ID, including 1) Do different tools produce different tool marks? and 2) Can a trained examiner reliably distinguish among them? Other books published on the topic have assumed these true and have simply discussed what is involved in the discipline. This book brings together the most recent studies, serving as a well-referenced, single resource that shows that FATM-ID is scientifically reliable. Intended primarily for firearm and tool mark examiners, this valuable resource serves as a primary requirement for the training of firearm and tool mark examiners. Finally, it will be a valuable resource for attorneys who are seeking to better understand the scientific reliability of FATM-ID. Written by a foremost expert in FATM-ID, the book provides a complete and scientific examination for anyone involved in firearm and tool mark identification. - Provides a single resource that examines the scientific reliability of firearm and tool mark identification - Covers the role of bias in the examination process and how it can impact the reliability of the final outcome - Written by an expert in the field with over 25 years of firearm and tool mark experience