Pretty Little Liars started with the return of Aria (Lucy Hale) to the town of Rosewood a year after her best friend Alison (Sasha Pieterse) disappeared. Before they grew apart, Aria and her friends Hanna (Ashley Benson), Spencer (Troian Bellisario) and Emily (Shay Mitchell) swore never to tell anyone what happened the night Alison disappeared. However, the girls are later haunted by messages from the mysterious and crafty "A," who seems to know things only Alison would.
Take a look back and see what A was up to in PLL’s first season. The second season premieres on June 17 on etc.