A murderer who leaves no traces. A victim who disappears into nothing. It was supposed to be the happiest day of Caroline's life: a wedding in the Shetlands. Midsummer night, the coast bathed in silver light. The guests are celebrating joyfully - until a friend of the bride is found dead. Detective Jimy Perez and his colleague Willow Reeves follow a mysterious lead: Shortly before her death, Eleanor had claimed to have seen "Peerie Lizzie," the ghost of a little girl who had died here over a hundred years ago. Just a haunting? Or a secret so terrible that someone is trying to protect it at all costs?.