Pretty Little Liars - Peter Tells Spencer Mary Killed Jessica Reveal - "Power Play" (7x14)

Spencer arrives back at the Hastings household and Peter questions why Spencer was looking for Mary as he was made aware. Spencer becomes mad at him considering he's been lying to her about her life since she was born. Peter tells Spencer that there are things about Mary that Spencer does not understand. Spencer gives him an ultimatum: she will walk away and she won't come back or he will tell her what he's so afraid of about Mary. Peter tells her that the last time he saw Mary, was when Spencer came back from rehab (in "Cover For Me" 4x22), a flashback of Mary looking at Spencer while she's looking out at Alison's window. Mary leaves as Veronica is going into Spencer's room, Mary goes down stairs to leave, but Peter is in the kitchen. He realizes it's Mary and not Jessica and Mary tells him that she just wanted to see what Spencer looked like. Spencer questions "she wanted to see me?", Peter corrects her "she wanted revenge." Peter says that Mary was unhinged, Jessica told her that Charles was dead, she found out that Charles transitioned into Charlotte and was alive. Mary wanted revenge, wanting Jessica dead, but Peter wouldn't help so she turned on him. She killed Jessica and buried her in the Hastings' back yard to rope him into it. Spencer realizes it means Peter knew about Charlotte before the dollhouse happened. Peter admits this and says that he wouldn't let anything like that happen to her again. Peter tells her that he can live with Spencer hating him for that but begs Spencer to let him protect her.

Ali’s turn at the game forces her to face a monumental personal decision, made even more difficult when A.D. triggers Ali to remember a forgotten trauma. Spencer has a long overdue conversation with her father about his past sins and recent whereabouts. Emily continues to navigate working at Rosewood High with both Ali and Paige, especially when Ali comes to a troubling realization about her pregnancy, and Paige makes a big decision. Aria continues to question the fate of her relationship with Ezra and bristles under A.D.’s taunts. And, in the search for Mary Drake, Hanna and Spencer run into a familiar face with a shocking secret. #PLL #PrettyLittleLiars #PLLEndGame