Oslo is in the grip of one of the most torrid summers than history remembers. Even put two potatoes on the fire looks like a torture, but when, in a center apartment, large blackish spots widen into the water that bubbles on a stove, the lady who is cooking understands that it cannot be the fault of the heat and, lifting The ceiling eyes sees a dense dark liquid driving through the plaster. Upstairs, the fifth, a young woman lies in a puddle of blood, murdered. A finger was severed from her left hand and behind her the eyelid of her was hidden a tiny diamond in the shape of a five-pointed star, the star of the devil. At the same time, at another point in the city, Detective Harry Mole lies in the apartment of him, completely drunk. From the assassination of his colleague Ellen he has no longer resumed himself, graduating little by little in a state of abatement that led him to complete isolation and suspension from the service. However, it is the leader of the police, Bearne Moller, to force him to re-emerge from him alcohol. And he's short of men but, above all, he wants to give Hole a last chance.