5. Miss Me x 100

The day has finally arrived for Alison's first day back at Rosewood High. However, neither the girls nor Alison are ready for it. Determined to put on a brave face, Alison returns to also help heal the damage she did years ago. While Spencer's family thought that Mrs. Hastings was at a spa, really she was having a private investigator finding out that Mr. Hastings and Melissa weren't at a dinner as they said. Mrs. Hastings is leaving town alone after a failed attempt to bring Spencer. Aria still suffers from the accident in New York and meets the returning Jenna, who is still grieving for her beloved's death.

Mona prepares her "army of losers", in which Sydney and Jenna are revealed to be a part of, for the upcoming war against Ali, which escalated with a meeting between the two that ends in favor of Mona. Meanwhile, Caleb returns to Rosewood and leaves Hanna confused for the reason of his homecoming. Emily and Alison share a kiss and Aria and Ezra have sex. In the end, while the police are giving an interview about the dead girl in Ali's grave, who is revealed to be Bethany Young, 'A' makes their triumphant return to Rosewood by planting a bomb in Toby's house and making the entire house explode. ' A' ending: 'A' is seen texting the girls while moving their belongings into a new 'A' lair.