Marcie Kinderski is an academy headmistress assigned to scout for teenage girls for Garret Lang to kidnap and manipulate for his purposes of inseminating them and selling their babies.
When Lang's brownstone was sieged, she was interrogated on the campus of the academy she was employed at and was found to have an infinity tattoo on her wrist, notable for being the insignia of the Foundation of Knowledge Expansion, Lang's cult. She was arrested and imprisoned once the cult was disbanded. (SVU: "Perfect")