Better the Blood by Michael Bennett

Detective Senior Sergeant Hana Westerman and her partner, Stan, find a dead body that turns out to be the first victim of a serial killer who will soon set all of Auckland on edge. Hana soon discovers that the killer is taking revenge on the descendants of English soldiers who brutally executed a Maori chief over 160 years ago. The crime causes Hana, who is Maori herself, to reflect on her early career as a police officer, when she put her job before her culture that caused some close to her to call her a traitor. Hana realizes that she needs to confront her past in order to heal and move on. In addition, Hana must stop the killer before he completes his task. Better the Blood reminded me of the novels of Jo Nesbo and Stieg Larsson.