Happy Valley Guest cast, played by Susan Lynch Episode 2x01: Episode 1 (Feb 9, 2016) Episode 2x04: Episode 4 (Mar 1, 2016) Episode 2x05: Episode 5 (Mar 8, 2016) Episode 2x06: Episode 6 (Mar 15, 2016) Episode 3x02: Episode 2 (Jan 8, 2023) Episode 3x04: Episode 4 (Jan 22, 2023) Episode 3x06: Episode 6 (Feb 5, 2023)