Practical Instruction for Detectives

Practical Instruction for Detectives, authored by Emmerson W. Manning, provides a concise overview of modern detective methods based on Manning's extensive experience in leading private detective agencies. Written as a practical guide, it emphasizes that individuals with average intelligence can become successful detectives through common sense and the application of specific techniques. The book highlights the pressing need for skilled detectives in a society where many crimes go unresolved, making it a relevant resource for aspiring investigators.