Law & Order: Special Victims Unit - Season 12 - Eps 12: Possessed
A young man finds that his girlfriend Larissa Welsh has been attacked in her apartment with evidence that points to her buried past. Detectives Benson and Stabler go in search of her attacker and discover that an elderly man, Orville Underwood, may have been involved in traumatic events of Welsh’s past. For the detectives, solving the case comes down to who was in possession of the evidence.
About Law & Order: Special Victims Unit

Title: Law & Order: Special Victims Unit
First Air Date: 1999-09-20
Last Air Date: 2025-05-15
Status: Returning Series
Rating: 7.936/10 (from 3970 votes)
Language: EN
Seasons: 27
Total Episodes: 573
Network: NBC
Genres: Crime, Drama, Mystery
Production Companies: Wolf Entertainment, Universal Television, Studios USA, Universal Media Studios
Synopsis
In the criminal justice system, sexually-based offenses are considered especially heinous. In New York City, the dedicated detectives who investigate these vicious felonies are members of an elite squad known as the Special Victims Unit. These are their stories.
Cast

Mariska Hargitay
Olivia Benson

Ice-T
Odafin 'Fin' Tutuola

Peter Scanavino
Dominick 'Sonny' Carisi Jr.

Octavio Pisano
Joe Velasco

Kevin Kane
Terry Bruno

Juliana Aidén Martinez
Kate Silva