The Distant Echo: Part 1

S1, E1: At St Andrews Police Station in Scotland, DS Karen Pirie is often overlooked and underestimated by her colleagues. One day, she is unexpectedly tasked with reopening a 25-year-old cold case: the 1996 murder of 19-year-old Rosie Duff at the cathedral. Although three men were found at the scene, they were never charged. When one of them, Malkiewicz, is killed in a hit-and-run while jogging, Pirie officially launches her investigation team to uncover the long-buried truth.