Guest Stars Harry Unsworth as Rhodri Howells Oscar 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 Bradley Freegard as Evan Howells Catherine Ayers as Lisa Connors Alex Harries as Arthur Davis Lacey Jones as Megan Howells Demi Letherby as Alys 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
