The Vows of Silence: Simon Serrailler Book 4 by Susan Hill
A gunman is terrorising young women in the Cathedral town of Laffteron. What - if anything - links the apparently random murders? Is the marksman with the rifle the same as the killer with the handgun? The Vows of Silence is a sequel to the Various Haunts of Men, The Pure in Heart and The Risk of Darkness. 'This is a crime series that specialises in sidestepping conventions, always to exhilarating effect....These books succeed in harnessing all the genre's addictive power while maintaining a complexity and fascination entirely their own' Independent