In picturesque Rosewood, Pennsylvania, neighbors gossip over picket fences, and gleaming SUVs sit in every crushed-granite driveway. But recently, friendly smiles have been replaced with suspicious glares and accusatory whispers—and it's all because Hanna, Aria, Emily, and Spencer just can't keep their mouths shut.

In picture-perfect Rosewood, Pennsylvania, ash-blond highlights gleam in the winter sun and frozen lakes sparkle like Swarovski crystals. But pictures often lie—and so do Rosewood's four prettiest girls.

Hanna will do anything to be Rosewood's queen bee. Spencer's digging up her family's secrets. Emily can't stop thinking about her new boyfriend. And Aria approves a little too strongly of her mom's taste in men.

Emily’s been shipped off to Iowa to live with her uber-conservative cousins. Aria’s boyfriend is behind bars—because of her. Spencer’s afraid she was involved in Ali’s murder. But Hanna’s fate is far worse: She’s clinging to life in the hospital because she knew too much.

Spencer covets her sister's boyfriend. Aria's fantasizing about her English teacher. Emily's crushing on the new girl at school. And Hanna uses some ugly tricks to stay beautiful. But they've all kept an even bigger secret since their friend Alison vanished.