When Susan Harrow does not come home, her mother reports her missing to the police. Her body is later discovered on waste land and a murder investigation is launched, once again headed by Det. Supt. Walker. There is later a second murder and they know that they have a serial killer on their hands.

When Susan Harrow does not come home, her mother reports her missing to the police. Her body is later discovered on waste land and a murder investigation is launched, once again headed by Det. Supt. Walker. There is later a second murder and they know that they have a serial killer on their hands.