Possible spoilers for previous novels in the series.
… At the crime scene, Harry and Tom discover a young woman, shot in her bathroom, index finger cut off. An odd mark on her eye turns out to be a small, red diamond in the shape of a star or pentagram placed there by the killer. Harry soon gets drunk again, and Moller puts in the paperwork to get him suspended from the force. While waiting for the final decision, Harry uses a call by a distraught husband about a missing wife to get out of the office, and soon realizes that the police force actually has a serial killer on its hand, and that the wife is the second victim …
Cannonball Read V 