Sixteen books. Countless losses. One last chance to make it right.

Adrian Ring has come too far to stop now.

Across a shattered Europe, through loss, guilt, and the murderous dead, Adrian and his friends have fought for something more than survival—they’ve fought for each other, and for a chance that humanity might survive this extinction-level judgment. After uniting with Glen and Amara—who know where Adrian’s brother Tommy is—the road leads to Erfurt, where hope might still exist.

But they aren’t just carrying supplies.

They’re carrying Rachel.

Inside her lives something far worse than the undead—a malicious demon-spirit born from her own guilt, shame, and self-loathing, kept in check with sedatives that are becoming less effective with every day that passes. If they can get her there in time, and save her, they might change everything. If they fail… they will lose far more than one life.

They could lose all of them. Of course the hungry dead won’t let them pass quietly, and when they return to a bridge once crossed in desperation, they find it overrun—choked with the dead and filled with people that helped them once before that they will not abandon now. Because that’s the problem with caring: You don’t get to choose when it costs you.

Tommy’s group of survivors have what Adrian and Rachel need; a fragile hospital sanctuary that offers a desperate solution—one that could return them beyond the physical world and into the most dangerous battlefield they’ve ever faced: The Other Side.

To save Rachel, they must enter her mind… confront the darkness within… and survive what waits them all in the depths.

Because not all monsters wear rotting flesh.

And the worst ones… already know your name.