Happy Valley Guest cast, played by Kelly Harrison Episode 1x01: Episode 1 (Apr 29, 2014) Episode 1x02: Episode 2 (May 6, 2014) Episode 1x05: Episode 5 (May 27, 2014) Episode 1x06: Episode 6 (Jun 3, 2014) Episode 3x05: Episode 5 (Jan 29, 2023)