Question: how old are the pll characters in season 1

title: Pretty Little Liars (season 1)
text: `` 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 .