Adrianna has always believed nightmares belong in dreams.

Until hers begin following her into the waking world.

What starts as a series of terrifying encounters soon pulls her toward a place that shouldn't exist—a world hidden beyond the boundaries of the one she knows, where the dead don't always stay where they belong and some souls will do anything for another chance at life.

And somewhere in the darkness is Dane.

Mysterious, dangerous, and frustratingly unwilling to give her the answers she needs, Dane seems to know far more about Adrianna than he should. The closer she gets to him, the more impossible it becomes to separate her dreams from reality—or ignore the connection between them.

But Dane has secrets of his own.

As Adrianna begins to uncover the truth about the world haunting her dreams, she realizes that the danger surrounding her isn't random. Something has been searching for her, and the answers may be connected to secrets buried long before she understood there was anything to fear.

When the boundary between worlds starts to weaken, Adrianna will have to decide who she can trust before something waiting on the other side finds a way through.

Because some souls refuse to let go.

Some secrets follow us beyond death.

And sometimes one soul can change your world.