As an introductory guide, the goal of this book is to provide students of law enforcement, criminalists, members of the justice system, law enforcement professionals, and anyone interested in the field a starting point in understanding the pivotal relationship between police, the investigator, and the scientist in service of the law. From the first responder called to a death scene to the final analysis in the courtroom, Crime and Measurement outlines the processes, the rules, the protocols, and the principles of what it takes and what it means to measure and solve crime. The third edition updates Chapter 3 (At the Crime Scene) with new material on fingerprinting including digital imaging, silver emulsions (film) and thresholds.