In idyllic Rosewood, four very pretty girls just can't help but be badHanna will stop at nothing to be Rosewood's queen bee Spencer's digging up her family secrets Emily can't stop thinking about her new boyfriend And Aria approves a little too strongly of her mom's taste in men Now that Ali's killer is finally behind bars, the girls think they're safe But those who forget the past are doomed to repeat it And they should know by now that I'm always watching