Have you ever thought you were being followed or watched? Have you ever needed to follow or observe someone and not be seen? In the world of espionage, surveill

Surveillance and Threat Detection offers readers a complete understanding of the terrorist/criminal cycle, and how to interrupt that cycle to prevent an attack.

Surveillance Zone gives you an exclusive, behind-the-scenes look into a mysterious world that very few people know exists. It's the world of private-sector espi

From the author of the highly regarded training manuals Secrets of Surveillance and Surveillance Countermeasures comes the next course in identifying and evadin

"Dan Sommer's new book Surveillance Detection Specialist should be compulsory reading for every security professional, security consultant and close protection