Guest Stars Oscar Unsworth as Rhodri Howells Harry Unsworth as Rhodri Howells Mark Lewis Jones as Steve Baldini Hannah Daniel as Cerys Jones Eiry Thomas as DI Susan Williams Aneirin Hughes as Tom Howells Lacey Jones as Megan Howells Demi Letherby as Alys Howells Suzanne Packer as Delyth Lloyd Bradley Freegard as Evan Howells Catherine Ayers as Lisa Connors Alex Harries as Arthur Davis Rhian Morgan as Marion Howells Anastasia Hille as Gael Reardon Martha Bright as Angie Baldini Rhashan Stone as DI Laurence Breeze Aimee-Ffion Edwards as Madlen Vaughan Brochan Evans as Dyfan Vaughan Steffan Rhodri as Judge Gwyn Daniels Rhian Blythe as Anya Flye Rebecca Harries as Hannah Lewis Richard Lynch as Hayden Swancott QC Owen Arwyn as Shane Reardon Billy Hartman as Jeweller Francesca Dimech as Teacher Carli De La Hughes as Nurse Miguela Gonzalez as News Reporter