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

Liespotting: Proven Techniques to Detect Deception

I, Spy: How to Be Your Own Private Investigator

Hope

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

THE HATE TRAP: The Anatomy of a Forgotten Assassination

The Investigator’s Toolkit: Harnessing OSINT to Unmask Criminals

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

RECIPE FOR LOVE: Tales of Caring Relationships

How to Open & Operate a Financially Successful Private Investigation Business

Private Investigation and Security Science: A Scientific Approach

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.)

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

To Be a Crime Scene Investigator

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