In idyllic Rosewood Pennsylvania four very pretty girls just cant help but be bad. . . . Hanna will do anything to be Rosewoods queen bee. Spencers digging up her familys secrets. Emily cant stop thinking about her new boyfriend. And Aria approves a little too strongly of her moms taste in men. Now that Alis killer is finally behind bars the girls think theyre safe. But those who forget the past are condemned to repeat it. And they should know by now that Im always watching. . . .