Lea Thompson guests in this first episode of Law & Order: Special Victim Unit's sixth season as widow Michelle Osborne, who has paid a pair of private detectives to kidnap six-year-old Patty Branson (Abigail Breslin). When caught, Michelle insists that she is Patty's real mother, and that the girl had been abducted from her four years earler. Running DNA tests, medical examiner Warner (Tamara Tunie) determines that Patty's birth mother is the woman with whom she currently resides, Sarah Branson (Camilla Scott). This, however, does not prove that Michelle is lying--and in piecing the clues together, Detectives Benson (Mariska Hargitay) and Stabler (Christopher Meloni) are led to a fertility clinic which traffics in stolen embryos. ~ Hal Erickson, Rovi