"By the time you read this, I'll have killed one of your husbands. In an isolated retreat, deep in the Northumbria moors, three women arrive for a weekend getaway. Their husbands will be joining them in the morning. Or so they think. But when they get to Dark Fell Barn, the women find a devastating note that claims one of their husbands has been murdered. Their phones are out of range. There's no internet. They're stranded. And a storm's coming in....