Enjoy your stay! There’s only one rule…

After three decades of marriage, Deb and Larry are in a rut. So when the chance to spend a whole week at a Long Island seaside cottage comes up, they take it. A week on the beach could be just what they need. The best part?It’s completely free.

There’s just one rule: Don’t go downstairs into the basement.

But soon after arriving at the beautiful home that belongs to a separated couple, a hurricane brings rain and road-flooding that traps them inside for longer than they’d like.

The longer Deb and Larry are forced to stay, the more they learn about the owners of the house. The loud arguments, the sudden separation. The fact no one has seen the wife since. As their questions grow, so does the temptation to break that one rule.

Because the only way to get answers is to go downstairs.

But if they do, the whole horrifying truth will be revealed.

Fans of Freida McFadden, Daniel Hurst, and Kiersten Modglin won’t be able to put down this binge-able thriller that’ll keep you guessing to the very end.