The killer on the wall

The first body comes as a shock The second brings horror. The third signals the beginning of a nightmare. When fifteen-year-old Isla Bell finds three bodies propped against Hadrian's Wall, her whole world falls apart. In such a close-knit community, everyone knows the victims, and the man who did it. Twenty years on and Isla has dedicated her life to forensic psychology; studying the brains of serial killers, and even coming face to face with the...