"A' Is for Answers" is the twenty-fourth episode of the fourth season and the ninety-fifth episode of the ABC Family mystery drama series Pretty Little Liars. The episode, serving as the fourth-season finale and the winter finale, was broadcast on March 18, 2014. It was directed and written by I. Marlene King. In the episode, the girls finally meet up with Alison in Philadelphia and learn from her about everything that happened the night she disappeared. Meanwhile, the girls' parents are scrambling to find them and the police bring Spencer's family in for questioning, thinking that she may have killed the girl in Alison's grave. A' Is for Answers" premiered to an audience of 3.12 million viewers, up from the previous episode, and garnered a 1.3 rating in the 18-49 demographic. It also generated over 1.45 million tweets during its broadcast, becoming the most-tweeted episode of 2014 and the four most tweeted broadcast in television history. The episode received a general positive response from television critics, with calling it a "satisfying and surprising finale." Some critics, however, were dismayed by the questions surrounding the series' main plotline not being answered. Plot Present day Aria (Lucy Hale), Emily (Shay Mitchell), Hanna (Ashley Benson), and Spencer (Troian Bellisario) are led to a hiding place by Noel (Brant Daugherty), where they meet Alison (Sasha Pieterse). Alison recounts the night she disappeared and reveals that she had been confronting all of her "A" suspects that night. Meanwhile, Noel gives her a plane ticket and money for her to flee town. Alison also recounts her first time meeting Ezra and confirms to the girls that Spencer did not hurt her. After telling them about what happened that night, all the girls are attacked by what appears to be "A" and they run up to the roof. Ezra (Ian Harding) comes up just as "A" reaches them and claims to know who "A" is but "A" does not seem to care. He and "A" struggle for the gun, which is dropped in the struggle. Hanna picks it up and threatens the masked person at gunpoint to take off the mask. "A" pretends to reach for the mask, then jumps over to the next building and leaves through a door. The horrified girls then find that "A" managed to shoot Ezra in the stomach during the struggle and they call out for help. Back at Rosewood, CeCe