Rat Run — Caro Ramsay

A macabre discovery throws disturbing new light on a 20-year-old murder case in the latest tense and twisting Anderson and Costello mystery.

In August 1992, a young mother and her two small sons were brutally murdered in the woods behind their home. Her neighbor Andrew Gyle was convicted of the crime and sentenced to life imprisonment. Now, twenty-three years later, a macabre discovery throws new light on the case. Could there have been a shocking miscarriage of justice?

Having only just returned to work following an enforced leave of absence, DCI Colin Anderson knows he must make a success of his comeback case. But, as he and his partner, DI Costello, uncover serious discrepancies in the original investigation, it becomes clear that not everyone is telling them the truth. Meanwhile, Costello worries that Anderson is struggling to cope -- and his increasingly odd behavior causes her to begin to think the unthinkable: can she trust her own partner?