Why does a woman stab her wealthy, ageing husband to death in his sleep, before calmly calling the police? Investigating the murder, Detective Inspector Turner and Detective Constable Francis discover a web of evil centred on the picturesque Lancashire town of Medlock Bridge. What appears to be a legitimate business proves to be a cover for depravity.Why does Janice King surrender to the sadistic appetites of her lover, deceiving her adoring husband in the process, and what is the end-game? Is her husband capable of murder? DI Turner believes so.Why does Janice King cut out and conceal a newspaper appeal for information concerning a murdered little girl? Is her lover involved in thechild’s death?The story follows DI Turner and DC Francis as they consider these questions and find themselves faced with a sordid, cruel reality.