Law & Order: Special Victims Unit: Season 11, Episode 14

Savior

When a series of young prostitutes are found murdered with homemade prayer cards attached to their bodies, Benson and Stabler think that they've found the murderer, but are informed that a survivor named Gladys (Mischa Barton) has turned up with a prayer card. Meanwhile, Olivia is left to make a heartbreaking decision after Gladys asks for her help.