Emily Bennett works as a therapist in Pennsylvania, helping children overcome their troubled pasts—even as she struggles to forget her own. Once upon a time, Emily was part of a middle school clique called the Harpies—six popular girls who bullied the new girl to her breaking point. The Harpies took a blood oath: never tell a soul what they did to Grace Farmer. Now, fourteen years later, it seems karma has caught up to them when one member of that vicious circle commits suicide. But when a second Harpy is discovered dead shortly after, also from apparent suicide, the deaths start to look suspicious. And when Emily starts seeing a woman who looks a lot like Grace Farmer lurking in the shadows, she’s forced to wonder: Is Grace back for revenge? Or is Emily’s guilt driving her mad? Sticks and stones may break your bones, but the Harpies are about to find out just how much words can hurt you.