Gatekeepers — Robert Liparulo

It's hard to believe that things could have gotten worse for the King family-but they have. Dad's in handcuffs, the school bully has just found the secret portal that leads from the high school to the house, and Xander is sure he's found Mom, but they can't get back to her. Then Jesse arrives, and he seems to be a virtual Obi Wan of knowledge about the place. But is he the key they need to unlock the secrets, or just a crazy old man?

Dangers are increasing from within and without when Xander makes a startling discovery that explains why they haven't found any rooms that lead to the future. Alongside the threats, though, they're also starting to find some surprising allies.

All they have to do is get organized, get psyched, and get Mom. But that isn't nearly as easy as it sounds.