Show Thyself

Plot:

Lorna will not sleep until she finds out what happened to Aoife Cassidy and what Aoife knew. The town's laundry survivors are campaigning for justice. Lorna discovers that Aoife spoke to another survivor. Past betrayals surface and end in tragedy. Colman and local garda Massey join forces to trace Father Percy's murderer. Key evidence has been destroyed, but Colman identifies his murder suspect as Aoife, whilst Lorna's strange behaviour draws her to his attention. There's something about this town that is really starting to get under Colman's skin. (Courtesy of BBC)