Law & Order: Special Victims Unit Season 12 Episode 7 (Law & Order SVU s12e07) with title “Trophy” aired on Wednesday, November 3rd 2010 at 09:00 pm via NBC Network.
Here is summary for Law & Order: Special Victims Unit Season 12 Episode 7 :

After a young woman has been raped and murdered, her body turns up in an industrial laundry facility. Detectives Benson and Stabler soon find that she was involved in an environmental group called CLEAN, and it isn’t long before they track down the prime suspect.