St Andrews. 1996. The body of a young barmaid, Rosie Duff, is found assaulted and left for dead in the Cathedral grounds. The only suspects are the three students discovered at the scene and stained with her blood. Twenty-five years later, Rosie's murder has become the subject of a provocative true crime podcast and DS Karen Pirie is unexpectedly tasked with heading up the case. It becomes increasingly apparent that Rosie harboured a secret that could unlock the mysteries surrounding the case. As a young newly-promoted detective, Karen has her fair share of doubters in the largely male force and is determined to prove she's up to the job. When new evidence emerges, Karen hunts down the suspect to get their version of the story.

With the suspects under attack, Karen's case has become a live investigation overnight, but is this someone out for revenge, or is Rosie's killer trying to silence the truth? Thrown together with DS Phil Parhatka at the most awkward time, can Karen and her team overcome the judgement of her superiors and find the culprit in time? In 1996, the discovery 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. Exploiting the contacts of her best friend River, Karen makes a shocking discovery.

Crime drama. Damning forensic evidence leads to a shocking arrest and Karen brings the suspect in for questioning, but with only 24 hours to a build a case, is time running out? Bel's call-out on the podcast brings forward an eyewitness whose testimony leads Karen and The Mint to a horrifying possibility - with a new lead to pursue that could change the course of the entire investigation, Karen is forced to confront why she was chosen to lead the case and a version of the truth she'd never thought possible. With everything at stake, will Karen prove she's up to the job and finally achieve justice for Rosie after 25 years?

Detective drama. 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.

Detective drama. 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. Karen races to track down those responsible for the kidnap before the truth is buried forever.