This book provides a fascinating insight into the world of crime and law enforcement during the early 20th century. Written by Arthur Griffiths, a former police officer and renowned author, it offers a unique perspective on the challenges faced by law enforcement officials and the methods they employ to solve crimes. The book covers a wide range of topics, including detective work, forensic science, and criminal psychology, and is a must-read for anyone interested in the history of crime and justice.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.