This novel by Asa Nonami is a strange detective story. It starts off as a fairly routine mystery with a murder in a 'famires', but then about a third of the way in WHAM! we meet the Hunter of the title. The cover-srt is a bit of a give-away, but when the detectives realise what's killing people it becomes a whole new story. The characters are pretty standard fayre for the genre: tough but young female cop and a hard-as-nails older male cop. But they've been crafted in such a way that they seem fresh and original.