Guest Stars Victoria Pugh as DSI Susan Lynn Garmon Rhys as PC Ryan Davies Lowri Izzard as PC Mari James Lisa Victoria as Catrin Pritchard Ffion Dafis as Kelly Owen Owain Gwynn as Sion Wells Bryn Fôn as Hefin Mathews Lois Elenid as Beca Mathews Melangell Dolma as Sam Shepherd Jac Jones as Liam Pritchard Manon Prysor as Rhian Jenkins Dyfrig Evans as Glyn Jones Gruffydd Wyn Jones as Jason Williams Sion Pritchard as James Rhys Mark Robert-Flanagan as Karl Lewis Nia Haf as Lois Jones Gwyn Vaughan Jones as Gwenidog Emyr Gibson as Rhydian Jones Joseff Jones as TWM Jones Eilir Gwyn as Paul Evans Tesni Kujore as Cariad Karl