Plot summary
Hanna, Ashley and Caleb meet Lieutenant Linda Tanner, Detective Holbrook's partner. Due to the investigation of Wilden's safety deposit box, the bank forbade Ashley from accessing the vault. Hanna and Caleb remain suspicious of whether Ashley is guilty of a crime. Emily revisits Dr. Vargas who informs her that he was the one that called Family Services, and that the MRI shows that Emily has a tear in her rotator cuff. Toby visits Dr. Palmer who discusses his mother's suicide, he refers to his mother being a victim of the air being too heavy.
As Toby leaves Dr. Palmer asks him to tell his mother to keep away from the blonde girl, probably referring to Alison. Aria has an awkward encounter with Malcolm, which causes a temporary riff in her and Jake's relationship. Spencer admits to her mother and Melissa that she did not get into UPenn. Spencer and Aria follow Melissa to Hector Lime's shop where Spencer corners Melissa and demands answers. Melissa explains that Wilden set the fire at the Lodge at Thornhill and that she sent Jenna and Shana to watch over Spencer and her friends.
Furthermore, Melissa confesses that she was the second Queen of Hearts on the Halloween Train, but did not know Wilden's plan to assassinate Spencer and Aria until she was on the train. "A" texts Aria and Spencer saying that Melissa is not "A" material. ' A' ending: 'A' holds a broken mask of Melissa as 'A' glues the broken pieces together.
Credits
Adapted from Wikipedia contributors, Pretty Little Liars season 4. HTML formatting and reference markers removed.