For Rose McQuinn, the invitation to holiday at a luxury hotel on the Isle of Bute is an unexpected delight, until she discovers the real reason is to investigate a not-proven murder case from twenty years ago. With close links to a local family of ancient origin whose castle holds many dark secrets, Rose’s involvement unleashes a web of intrigue and sinister happenings, something she realises too late when someone decides she is close to the truth and must not leave the island alive.