So I ordered this from my trusty local bookseller and when I picked it up she gave the blurb at the back a read, went quiet, and then said 'Jaysus Christ.' Why, yes, this is dark. It's crime dark and it's horror dark and even a touch of dystopian sci-fi dark. The writing combines psychological tension with grimy physicality and the plot is a police-procedural serial killer story that gradually reveals itself to be murky urban fantasy. It'll darken your mood, but it's a great read.