Nice twisty, turny time-hopping mystery thriller with heaps of ghostly atmosphere and horror flourishes, shades of Micheal Marshall Smith and Graham Joyce and no doubt a few others I'm not thinking of. Really strong for a debut, great voice, great prose, only one plot thread left dangling (or maybe I'm being dim - why the chalk figures in the church?) but lots of others tied up nicely and yeah, that ending, not so much a twist as a deeply chilling beginning of an end.