Law & Order: Special Victims Unit: Season 10, Episode 15

Lead

Pediatrician Gilbert Keppler (Lawrence Arancio) is found guilty of sexually assaulting four of his male patients, so Detectives Stabler and Benson decide to go directly to Keppler for questioning, only to find him murdered in his apartment. Fin tells them that they are waiting for Greyleck to show up to the crime scene. To the detectives' surprise, Greyleck doesn't show up. She has resigned because the Obama administration called her back to Washington, D.C. Her new replacement is SVU's former ADA Alexandra Cabot (Stephanie March), who has been assigned to take over Greyleck's caseload by Jack McCoy nearly three years after her release from the witness protection program and subsequent return to the DA's office. Stabler and Benson's investigation leads to Jeff Lynwood, the developmentally challenged son of a wealthy man (John Gallagher, Jr.), who killed Keppler because he called him stupid. As the trial goes on, the detectives discover that Jeffrey suffers from lead poisoning caused by Chinese-made products.