14. Through a Glass, Darkly

Complete story — includes the ending

The girls attend Mona’s funeral, but an empty casket makes it hard to get closure from the ceremony. Alison makes an appearance after the service and is met with a literal slap in the face from Mrs. Vanderwaal. Hanna seeks unorthodox methods of finding Mona’s body. She meets with Mrs. Grunwald, who uses a sentimental item to connect with Mona’s spirit. She says Mona is surrounded by darkness and earth. Spencer’s indictment is unsealed, revealing a witness statement taken by Detective Wilden more than two years ago. In it, Mrs. DiLaurentis claimed to have seen Spencer with a blonde girl the night Bethany Young was killed. Now, Bethany’s family is trying to get Spencer’s bail revoked. Spencer pleads with Jason to admit that he lied about Alison’s alibi. Jason seems unwilling to betray Alison, and sends Spencer away. He later asks Alison where she really went on Thanksgiving. She won’t answer the question, but insists that she did not kill Mona. Emily has the idea to plant Alison’s DNA at the crime scene. Spencer is hesitant, but ultimately agrees to the plan. The two are at the Vanderwaal house when they find a camera hidden inside a vent. It captured a struggle between Mona and her blonde-haired killer. The police show the video to Jason. He admits that the blonde in the footage could be Alison. The police prepare to arrest Alison as she prepares to flee. The girls intercept her behind her house and form a human barricade, preventing her from running. She gives one last ominous warning before the police handcuff her. Spencer’s charges are officially dropped. Mike opens up about his feelings for the first time since Mona’s death. He is frustrated that more people are mourning her now than appreciated her when she was alive. Realizing she was one of those people, Aria asks to learn about the version of Mona that Mike knew and loved. Emily meets Paige at the airport, but the news of Alison’s arrest does not convince her to stay. The two share a tearful goodbye. The liars’ relief that ‘A’ has finally been caught is short-lived, as the tails of three fireworks form the letter ‘A’ in the sky. It seems that ‘A’ might still be out there while Alison tosses and turns in a jail cell.