Guest Stars Oscar Unsworth as Rhodri Howells Harry Unsworth as Rhodri Howells Seren Letherby as Rhodri Howells Mark Lewis Jones as Steve Baldini Aneirin Hughes as Tom Howells Hannah Daniel as Cerys Jones Alex Harries as Arthur Davis Catherine Ayers as Lisa Connors Bradley Freegard as Evan Howells Demi Letherby as Alys Howells Lacey Jones as Megan Howells Eiry Thomas as DI Susan Williams Betsan Llwyd as Delyth Lloyd Rhian Morgan as Marion Howells Matthew Gravelle as Terry Price Mali Harries as Bethan Price Menna Trussler as Eira Jones Gareth Jewell as Gavin John Morgan Hopkins as Gareth Tacsi Jenny Livsey as Dr. Samantha Beynon Llion Williams as Alun Jenkins Gilly Adams as Y Barnwr Walker
