A gripping, unstoppable novel of terror and suspense from number one bestselling author Kelley Armstrong. A few months ago, Riley Vasquez was caught up in a horrific murder. Now everyone around her thinks she's a hero. Riley isn't so sure. Meanwhile British army brat Max Cross is suffering under the shadow of a life-altering diagnosis he doesn't dare reveal. The last thing either of them wants is to spend a weekend away at a therapy camp alongside five other teens with 'issues'. But that's exactly where they are when three masked men burst in to take the group hostage. The building has no windows. The exits are sealed shut. Their phones are gone. And their captors are on a killing spree. If Riley and Max don't escape, they'll be next. But to do that, they'll have to trust each other with their deepest secrets...