Pretty Little Liars Season 1 Episode 13 : Know Your Frenemies
"A" makes Hanna eat cupcakes, making her think about being bulimic again. "A" saves Aria's and Ezra's relationship. Emily's mom finds drugs in Maya's bag, and brings the bag to Maya's parents, thus sending her to juvie. Spencer unravels the Ali murder, thinking Ian is the killer. She also finds out that her sister, Melissa, is trying to get pregnant. In the end, a video of Ali and Ian is shown, the camera falls, leaving the watchers hearing someone choking someone. A body is thrown to the ground, Ali's hand appearing in front of the screen. Her name bracelet brings the girls to think Ian killed Ali.