S4, E19: The discovery of a nine year old beauty queen's body in a suitcase on a Manhattan bus sends Detectives Benson (Mariska Hargitay) and Stabler (Christopher Meloni) searching for a pedophile with a fetish for pageants. However, when the prime suspect blames a virtual pornography website for his crime, A.D.A. Cabot (Stephanie March) must put the first amendment on trial.