Blue Lightning: A Thriller (Shetland Island Mysteries, 4)

In the fourth book of Ann Cleeves' critically acclaimed series set in the Shetland Islands, Detective Inspector Jimmy Perez brings his fiancée home to Fair Isle, a birder's paradise, where strangers are viewed with suspicions and distrust. When a woman's body is discovered at the island's bird observatory, the investigation is hampered by a raging storm that renders the island totally isolated. Jimmy has to find clues the old-fashioned way, and he has to do it quickly. There's a killer on the island just waiting for the chance to strike again.