The brand new locked-room thriller for fans of Ruth Ware and Freida McFadden.

You are cordially invited to the Beechwood Castle for a night you'll never forget...

Six people find a thick cream envelope on their doorstep. Inside is an invitation to spend 24 hours in a crumbling manor house and be in with the chance to win a portion of one million dollars. The catch: Beechwood Castle was the site of one of the most horrific murders in modern history.

The smell of blood, decay and death still hangs heavy in the air.

Six people walk into the house. One of them is an imposter, all of them are traitors, which of them will survive the night?