Return to Hinterland, a place where serenity and beauty are a thin veil for the darkness within this scarred landscape. Detectives Tom Mathias and Mared Rhys work the beat, investigating the twisted murders that befall the seaside town of Aberystwyth, a fractured community steeped in folklore. After the dramatic climax of the last series, Series 3 of Hinterland finds DCI Tom Mathias seeking to heal the physical, as well as the psychological, scars. The hideaway hed found himself on the wild shores of Ceredigion has been destroyed and he has to relocate to the heart of the seaside town of Aberystwyth. Mathias is thrown back into an old case that has intrigued him since his early days working in Aberystwyth, a case that threatens to drive an irreconcilable rift through the team. As he delves into the past his colleague DS Sian Owens focus is on a current case as she tries to discover the culprit of the arson attack on Mathias home