Spencer volunteers at the library. Sure, it's community service, but he likes his work.

Especially if it means getting to see Mallory. Mallory spends a lot of time keeping her head down. When you're sixteen and homeless, nothing matters more than being anonymous.

But Spencer's charm makes her want to be noticed. But after a tragic death at the library, ghostly voices and messages begin to appear.

Spencer and Mallory know a homeless teenager makes an easy target, and their safe haven may not be as safe as they thought.