Get the Truth: Former CIA Officers Teach You How to Persuade Anyone to Tell All

Spy the Lie: Former CIA Officers Teach You How to Detect Deception

I, Spy: How to Be Your Own Private Investigator

Never Be Lied To Again: How to Get the Truth In 5 Minutes or Less in Any Conversation or Situation

Introduction to Conducting Private Investigations: Private Investigator Entry Level (02E) (2022 Edition)

THE HATE TRAP: The Anatomy of a Forgotten Assassination

How to Open & Operate a Financially Successful Private Investigation Business

How to Undertake Surveillance & Reconnaissance: From a Civilian and Military Perspective

The Investigator’s Toolkit: Harnessing OSINT to Unmask Criminals

Private Investigation and Security Science: A Scientific Approach

The Body Language of Liars: From Little White Lies to Pathological Deception—How to See through the Fibs, Frauds, and Falsehoods People Tell You Every Day

A MANUAL OF PRIVATE INVESTIGATION TECHNIQUES: Developing Sophisticated Investigative and Business Skills to Meet Modern Challenges

Essentials of Interrogation

Evidence in Traffic Crash Investigation and Reconstruction: Identification, Interpretation and Analysis of Evidence, and the Traffic Crash Investigation and Reconstruction Process

TRAFFIC CRASH INVESTIGATORS' MANUAL: A Levels 1 and 2 Reference, Training and Investigation Manual (3rd Ed.)

Instant Analysis

Death of a Princess: The True Story Behind Diana's Tragic End

Police Investigation - Powers, Tactics and Techniques (Vol 1 and 2 combined) 4th Edition 2022: Police Procedural and Police Administration

You Say More Than You Think: Use the New Body Language to Get What You Want!, The 7-Day Plan