AIR DATE: 2012-10-31 - 21:00
An underage girl disappears after following her older sister to a college party in Manhattan. The SVU detectives mobilize to recover the missing girl but find themselves thwarted by a high-tech kidnapper using the internet to cover his tracks. As the case hits a dead end, DA Barba returns with some unlikely help. Meanwhile, Rollins is distracted by the sudden appearance of her very troubled sister.