[s12e13] Mask -

as Detective Elliot Stabler: Takes a central role in the undercover operation.

as ADA Gillian Hardwicke: The prosecutor overseeing the case. [S12E13] Mask

The episode begins when two young boys witnessing a crime call the detectives to investigate the brutal rape of Debbie Shields and the physical assault of her partner, Ann Jackson, by a man wearing a haunting mask. The investigation leads Benson and Stabler to Ann’s estranged father, (Jeremy Irons), a psychiatrist and recovering sex addict who runs a rehabilitation clinic. as Detective Elliot Stabler: Takes a central role