Law & Order: Criminal Intent S06E02 - Tru Love

Keith Cooper is no stranger to his dad's womanizing ways, but when Dr. Grant Cooper winds up dead after his motorcycle is found sabotaged, Detectives Logan and Wheeler find a private collection of the Doctor's personal conquests. When Keith's high-school teacher, Danielle shows up on one of tapes, the Detectives assume her jealous husband is to blame. But the case takes a major turn when the Detectives find Danielle in the arms of her under-aged student.