Shetland Guest cast, played by Sara Vickers Episode 3x01: Episode 1 (Jan 15, 2016) Episode 3x02: Episode 2 (Jan 22, 2016) Episode 3x03: Episode 3 (Feb 5, 2016) Episode 3x04: Episode 4 (Feb 12, 2016) Episode 3x06: Episode 6 (Mar 4, 2016)