A book by a founder of this site.
Private Investigators – Infidelity Investigations
If you suspect infidelity, hiring a private investigator is the most effective way of discovering the truth. This is especially so if your spouse knows you are suspicious and is trying to hide the truth.
Private investigators are licensed by the state to engage in surveillance. More importantly, private detectives are knowledgeable about the surveillance techniques which are legal to use in the area where you reside.
If you feel that your situation may be heading toward divorce, hiring a private investigator is a smart thing to do (see should I hire a PI?).
When hiring a Private Investigator, it is important to select someone who specializes in infidelity investigations.
Additional Options – back to the tips for catching lying and cheating.