Six-year-old Patty Branson is almost abducted in Central Park while her father reads the paper. Benson and Stabler investigate and find out that the men who attacked her are actually P.I.'s hired by Michele Osborne to kidnap Patty, claiming she is Patty's real mother. M.E. Warner conducts a DNA test to determine the child's true biological mother. Meanwhile, Benson traces the source of the confusion about the child's origins back to a fertility doctor.