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 Bradley Freegard as Evan Howells Suzanne Packer as Delyth Lloyd 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 Morgan Hopkins as Gareth Taxi Aimee-Ffion Edwards as Madlen Vaughan Brochan Evans as Dyfan Vaughan Steffan Rhodri as Judge Gwyn Daniels Alun ap Brinley as Geraint Jernigan Rebecca Harries as Hannah Lewis Richard Lynch as Hayden Swancott QC Charlie Spring as Boxing Instructor Robert Gwyn Davin as Prison Officer Ela Hughes as Soloist