At 11:11 PM, the Visitors come.

Twelve-year-old Kian Offtenmiller knows because he has seen them.

Huge figures standing in the dark. Watching him. Waiting at the foot of his bed.

His dad tells him to grow up, stop pretending. His older brother tells him to listen to Dad and let it go. Even Kian sometimes wonders if they are right.

Until one of the Visitors leaves something behind.

A strange orange-and-tan stone appears beneath Kian's bed. Then a letter shows up in his backpack with a warning: the Visitors are real. Both good and bad are watching. Be ready.

Suddenly, the weird things Kian has spent years trying to explain are getting harder to ignore. There is a locked closet at school that no kid is supposed to open. His little sister Quinn knows things she shouldn't know. And the stone gets hot when certain people are near.

Someone is watching Kian. Someone wants something from him. And Kian is starting to wonder if the people closest to him are hiding the biggest secret of all.

To protect his family, Kian will have to figure out who he can trust. But first, he will have to trust himself.

Because the next time 11:11 comes, the Visitors might not just be watching.