The picturesque holiday island of Gotland is in the middle of a busy tourist season when a young woman is discovered murdered. Suspicion falls on her husband. Inspector Anders Knutas is hoping it will be a straight-forward case; the local authorities are hoping so too, but more out of an interest in protecting the tourist trade than any desire to see justice served. Then another victim is discovered, again she is a young woman and she has been murdered in the same chilling manner. Inspector Knutas must face up to the horrifying prospect that there is a serial killer loose on the island.. The killer remains unknown, moving freely, unseen, on the island. All that is clear is that the two victims are just the beginning, unless Knutas and Berg find the killer before he strikes again.