The Clarksville Private Detective, a Clarksville Private Investigator can get the answers If you have concerns that your spouse, boyfriend, or girlfriend may be having an affair, call The Clarksville Private Detective, a Clarksville Private Investigator and learn the truth. It is our experience that if your suspect, you’re probably right. Surveillance is the best way to catch the suspected cheater. All surveillance is conducted by our experienced surveillance investigators using the latest is video surveillance technology and covert camera systems. They say a photo is worth a thousand words: video never shuts up.