Hinterland Guest cast, played by Gwen Ellis Episode 1x01: Episode 1 (Oct 29, 2013) Episode 3x03: Episode 3 (Nov 13, 2016) Episode 3x04: Episode 4 (Nov 20, 2016) Episode 3x07: Episode 7 (Dec 11, 2016) Episode 3x08: Episode 8 (Dec 18, 2016)