Despite being underrated, I would say this is one of the better crime mysteries involving supernatural elements. As others have noted in their comments, this is not really 'light' read – but I would recommend it for some rainy day. The detective, despite looking serious and stoic, is affected by the cases and his perspective is constantly challenged through interactions with the spirits. I find character growth in detective fiction/police procedurals hard to come by so it was nice to see him explore and grapple with his concept of morality.