Hinterland Series 2 premieres in North America August 9. Series 1 premieres in Latin America August 12. DCI Tom Mathias, a brilliant, brooding loner newly arrived in this isolated land of mountainous terrain and close-knit villages . DI Mared Rhys, a local girl who knows Aberystwyth society inside out. Together they confront a series of mystifying murders that ultimately push Mathias to the edge. CC Available.