Pretty Little Liars Season 1 Episode 1

The perfect little town of Rosewood holds more than its fair share of secrets, and for four estranged friends, Aria, Spencer, Hanna and Emily, their darkest ones are about to unravel. A year after their Queen Bee, Alison, goes missing, the girls begin receiving messages from ''A'', saying – and threatening – things only Alison would know. But it couldn't be Alison. Could it...?