Find out how much a private investigator costs to follow someone so you know what price you can expect to pay.

Learn how to use a spy watch camera correctly. Follow our instructional guide for using a spy watch to secretly record someone.

These 3 signs are the best indicators your spouse could be cheating. Any cheater will display these signs of infidelity.

Can a private investigator tap your phone to get information? Learn about what can and can't be done.

Have you ever wondered what gadgets spies used in the past and during the cold war? Check out our list of declassified vintage espionage tools.