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

Liespotting: Proven Techniques to Detect Deception

Antifragile: Things that Gain from Disorder

I, Spy: How to Be Your Own Private Investigator

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

The Investigator’s Toolkit: Harnessing OSINT to Unmask Criminals

Private Investigation and Security Science: A Scientific Approach

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

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.)

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

Attached: The New Science of Adult Attachment and How It Can Help You Find--and Keep-- Love

Read People Like a Book: How to Analyze, Understand, and Predict People’s Emotions, Thoughts, Intentions, and Behaviors

The 33 Strategies of War