Emily has been targeted by "A" as the weakest link. "A" texts Emily a pic of Ezra and a dark haired girl kissing and tells her to give it to Ella. The girls decide it's time to confess about "A" to Dr. Sullivan. They do and they find a confidante on their side. But Dr. Sullivan gets a harassing phone call from "A" of a recording from one of her sessions with the girls. After lots of research in her files, Sullivan tells Emily to meet her at the office because she knows who "A" is. But when the Liars get there... Dr. Sullivan is gone.