31 YA Mystery Books that are Absolute Must-Reads

Stephanie Perkins's first thriller "There's Someone Inside Your House" ($13) is every bit as nerve-wracking as a Hollywood slasher film. When a series of horrifying murders rocks her grandmother's small Nebraska town, newcomer Makani Young becomes a target too — and since she's trying to keep certain secrets from her own past quiet, the last thing she needs is a serial killer stalking her.