After being disgraced, investigator Rose Linden is sent to work under administrative manager Marion Maloney at the Criminal Justice Review Agency. Despite being told to resume light duties only, Rose ignores orders and soon drags Maloney into a case of injustice.

The investigation deepens and Rose is forced to battle her demons as she copes with the knowledge that she recently freed a guilty man.

Rose receives an appeal from Daniel Berrington, who was found guilty of murdering a retired army officer when he was ten years old.

Daniel escapes from custody, presenting Rose with a difficult dilemma: hand him over to the authorities and save her job or risk the agency's future by taking on the case.

Rose and Maloney dig up the case of Katie Phelan, who was convicted of killing a baby in her care.

A series of devastating revelations about the Campeses cause the detective duo to wonder if they've made a terrible mistake in securing Katie's release.