When eight-year-old goes missing on a remote island off the coast of the wild Scottish Highlands, police officer is quickly sent to investigate. But a gale is gathering force, and Fiona becomes increasingly concerned for a little girl braving the strong winds alone. As Fiona questions the locals, she soon realises that they are hiding many secrets. What is this island, and who really lives here? Then a boat violently crashes off the coast of the island. On board, Fiona discovers the body of a man who has clearly been murdered. But the killer is nowhere to be found. The only place they can be is on the island with no way out. Realising a killer is trapped on their island, tensions amongst the locals and Fiona begin to rise. As the gale rages on and the body count continues to rise, will Fiona find the young girl and the killer before they strike again?