Chris Hansen is best know for exposing Internet predators on television, but the married 'To Catch a Predator' host recently found himself on the other side of a hidden camera.

Thanks to a National Enquirer sting operation, Hansen's cheating ways were exposed when he was secretly filmed sneaking behind his wife's back while on assignment in Florida.

According to the Daily Mail, the NBC host, 51, has been engaged in a four-month affair with Kristyn Caddell, a 30-year-old news anchor for an NBC affiliate in West Palm Beach, Florida.

Hansen and Caddell were filmed having dinner together at the Ritz-Carlton in Manalapan before they both went back to Caddell's apartment. Hansen was spotted leaving her apartment the next morning.