The Butcher and The Wren: A Crime Fiction Book by Alaina Urquhart

What Urquhart does do though is give us a more rounded an believable serial killer for our protagonist to fight. She leaves aside the grandising of the serial killer as some kind of terrible, yet infalible not quite human figuer in the shadows, an inversion of the great man fallacy, and instead show us someone who is not as clever as he thinks, or wishes to be.