Seven strangers are invited to compete to win a clifftop mansion. The rules are simple: each contestant must have at least one hand in contact with one part of the house at all times. The last one to take their hand off, wins the house.

After 36 hours, a contestant is murdered. Soon they start to realise that it may not be the last person to leave the house that wins it, it may be the last person alive.

From the bestselling author of Find Us and Everyone in My Family Has Killed Someone comes a locked room mystery where the door is open, but no-one wants to walk through it.