A true-crime podcast reignites interest in a 25-year-old murder case from St Andrews, leading Detective Sergeant Karen Pirie to spearhead a review. As she delves into the details, new evidence emerges, pointing to a possible suspect. However, the situation escalates when those linked to the case face threats, transforming the cold case into a pressing investigation. With time running out, Karen races to uncover the truth and apprehend the killer before more lives are endangered.