A shocking murder rattles London. Far from the chaos, a remote country guesthouse welcomes seven strangers seeking refuge. But when a police sergeant battles through a deadly snowstorm with a warning no one expects, it becomes clear the threat is already within their walls.

Every whisper hides a clue. Every story masks a lie. And as suspicion tightens its grip, one question chills the room:

Who among them is capable of murder?

Step into Monkswell Manor and solve the great British murder mystery that has kept the world guessing for generations.