Excerpt from Practical Instruction for Detectives: A Complete Course in Secret Service Study It has been said that every criminal, no matter how careful he may be in his operations and regardless of the nature of his crime, will leave some trail or clue by which he may be detected. All good detectives will vouch for the truth of this statement. For the real detective no case is too complicated nor too difficult. More trained detectives are needed, and until we have them, undetected crimes and unpunished criminals will continue on the increase. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.