On an island on the coast of Cornwall, cut off from the mainland by the tides for most of the day, thirteen old friends meet at Tregowan Castle for a weekend of revelry. Amongst them is a killer — but who? As a storm traps them on the island and past betrayals and grievances are revealed, nerves fray and friendships begin to fracture. But with no escape and no way of calling for help it's only a matter of time before the killer strikes again. And when everyone is keeping secrets, anybody could be the next victim...
