S5, E25: A woman who drops her cell phone in the toilet at a coffee house finds a spy cam. Everyone is shocked when they realize what was going on. Benson (Mariska Hargitay) and Stabler (Christopher Meloni) track the camera to a high tech shop and ask the techno geek, a woman named Charlie (Amy Sedaris), where they were installed. Many of them went to a porn operation so those cameras are ruled out. Next, the Detectives track down the man they think was the voyeur and when they go to his apartment, Charlie answers. It turns out her brother Wade (James Urbaniak) is the pervert, and he had been using the toilet cam to spy. Everyone is thoroughly disgusted by him and ready to charge him with the max, when he admits he saw a real crime happen.