S1, E2: 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.