While investigating the disappearance of one of their classmates, Piper and Hazel are kidnapped and taken to a building designed to keep them locked away, where every room is a method of torture and a test of survival in this new thriller from the "New York Times"-bestselling author of "The Cellar" and "The Cabin."

A twisty psychological thriller from Natasha Preston, author of the #1 New York Times bestseller author of THE CELLAR!

It's a fight for survival in a building designed to ensure that no one makes it out alive.

In Piper's hometown, teenagers keep disappearing, and everyone assumes they're just a bunch of runaways. But when yet another person vanishes, Piper and her best friend Hazel suspect something more sinister is going on.

So they decide to investigate, determined to learn the truth. Their search for answers leads them to the source of the missing...and their captors. Piper and Hazel suddenly find themselves locked away in a secluded property in the middle of a privately owned forest.

But the building isn't only meant to keep them imprisoned; every room is a test to see if they can make it out alive.

And failure means being lost...forever.

A high stakes thriller for readers of One of Us is Lying and The Cheerleaders!

Teen Thrillers also by Natasha Preston:

The Cellar

Awake

The Cabin

You Will Be Mine

The Twin