12x17 (Girl Most Likely) 

When Julie Cade, a high school student, is found dead, Detectives Briscoe (Jerry Orbach) and Green (Jesse L. Martin) suspect that her fellow students she exposed for running a web site that detailed their sexual exploits may have sought revenge.
密码: law, fullepisode, order, full episode, 1217, s12e17, season 12