Guest Stars Seren Letherby as Rhodri Howells Harry Unsworth as Rhodri Howells Oscar Unsworth as Rhodri Howells Mark Lewis Jones as Steve Baldini Aneirin Hughes as Tom Howells Hannah Daniel as Cerys Jones Bradley Freegard as Evan Howells Catherine Ayers as Lisa Connors Eiry Thomas as DI Susan Williams Lacey Jones as Megan Howells Demi Letherby as Alys Howells Betsan Llwyd as Delyth Lloyd Rhian Morgan as Marion Howells Angeline Ball as Gael Reardon Matthew Gravelle as Terry Price Richard Elfyn as DCI Huw Parry Kizzy Crawford as PC Emma Jones Pinar Ogun as Dr. Meral Alpay Lowri Palfrey as Erin Glynn Glyn Pritchard as Dewi Glynn Menna Trussler as Eira Jones Gareth Jewell as Gavin John Memet Ali Alabora as Luca Samaras Dafydd Hywel as Rev Talbot Helen Griffin as Maggie Talbot Macsen Mackay as Clerc Y Llys Charlotte Randall as Menyw Ifanc