When her best friend Cassie sends her a cryptic note asking for help, Wylie sets out to find her with Jasper, the guy who set Cassie off the rails. As Wylie and Jasper head farther and farther north into the dense woods of Maine, Wylie struggles to control her growing sense that something is really wrong.

Wylie is finally out of the detention center, but that doesnt mean shes safe. As much as she wants to forget everything that's happened and return to her normal life, Wylie knows that true freedom means discovering, once and for all, who is hunting the girls who are Outliers-and why. Armed with only a few clues and a handful of trusted allies, Wylie sets out to separate fact from fiction. Soon she is unearthing long-buried secrets and finds herself...