Construction is halted on the redevelopment of an orphanage after dozens of skeletons are found buried on the grounds dating from between twenty and forty years ago. Then a different set of skeletons are discovered in a far corner, young men from as recently as ten years ago. Meanwhile, Tony is behind bars for murder, and Carol has finally run out of road as a cop. While he's finding unexpected outlets for his talents in jail, she's looking into suspected miscarriages of justice. But they're doing it without each other; being together at visiting hour is too painful. When newly promoted DI Paula McIntyre discovers that one of the male skeletons belongs to a murder victim whose killer is supposedly behind bars-and the subject of one of Carol's investigations-it brings Tony and Carol irresistibly into each other's orbit once again.