Law & Order: Special Victims Unit (1999) : 1x10

When a woman is raped, she turns to the Special Victims Unit for help, but lack of evidence prevents them from apprehending the criminal. When the detectives revisit the case a few months later, they find the woman even less willing to talk about what happened, as she claims she has moved on. Things turn sticky when Benson and Cassidy spend the night together.