Steaming
performed by Sarah McLachlan

I will be the answer At the end of the line I will be there for you While you take the time In the burning of uncertainty I will be your solid ground I will hold the balance If you can't look down If it takes my whole life I won't break, I won't bend It will all be worth it Worth it in the end Cause I can only tell you what I know That I need you in my life When the stars have all gone out You'll still be burning so bright Cast me gently Into morning For the night has been unkind Take me to a Place so holy That I can wash this from my mind The memory of choosing not to fight If it takes my whole life I won't break, I won't bend It will all be worth it Worth it in the end 'Cause I can only tell you what I know That I need you in my life When the stars have all burned out You'll still be burning so bright Cast me gently Into morning For the night has been unkind

The Liars begin to suspect a woman, Gayle, might be "A", when she comes to Rosewood and begins to harass them; it is revealed that Emily backed out of a deal to let Gayle adopt her daughter in exchange for $50,000 paid under the table. Emily finds herself reconnecting with Isaac while attempting to tell him about her pregnancy, but she fears the repercussions of such a confession. Spencer visits Princeton hoping to join an Eating Club, but "A" interferes and spikes Spencer's pot brownies with LSD and Ritalin. Aria panics when she finds out Noel's father is a drag queen and ends up putting her relationship with Noel at risk when "A" threatens Aria to expose Noel's father photo publicly. On a tip from "A", Hanna begins spying on Mike's new girlfriend, Colleen. Later she becomes publicly humiliated by "A" when she sends everybody a video of Hanna stalking Colleen, and her desperate ways of getting Mike back. Gayle is murdered by "A" and it is revealed that she was Tabitha's stepmother. Tabitha's father speaks at Gayle's funeral, and announces that Tabitha's autopsy showed no trace of alcohol, meaning that she was murdered. He thus plans to re-open the investigation into her death, and threatens the killer that he will find him, both Gayle's and Tabitha's killer. The girls get very nervous about this.