Hinterland Guest cast, played by Sian Reese-Williams Episode 3x01: Episode 1 (Oct 30, 2016) Episode 3x02: Episode 2 (Nov 6, 2016) Episode 3x03: Episode 3 (Nov 13, 2016) Episode 3x04: Episode 4 (Nov 20, 2016) Episode 3x05: Episode 5 (Nov 27, 2016) Episode 3x06: Episode 6 (Dec 4, 2016)