When a historic murder case in St Andrews becomes the subject of a provocative true crime podcast, fearless detective Karen Pirie is tasked with heading up the cold case review.

With the suspects under attack, Karen's case becomes a live investigation overnight. But is Ziggy's death a revenge killing, or is Rosie's killer trying to bury the truth? In 1996, the recovery of an abandoned car leads to an arrest, but with a lack of evidence, the investigation flounders-until a potential eyewitness brings DI Maclennan new hope. In the present, Karen makes a shocking discovery.

Karen uncovers a shocking secret about the events of that night. But when a potential new suspect emerges, Karen is forced to face her toughest decision yet.

When a body is discovered in a quarry, DI Karen Pirie and her team are tasked with reopening the case of the infamous 1984 kidnapping of an heiress and her son.

The team are closer than ever to the truth as Karen digs into Cat's life and disappearance, but a shock discovery changes the course of the investigation.

The case takes a dramatic turn and the pressure from all sides increases as Karen races to track down those responsible for the kidnap before the truth is buried.