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 Lacey Jones as Megan Howells Aneirin Hughes as Tom 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 Aimee-Ffion Edwards as Madlen Vaughan Brochan Evans as Dyfan Vaughan Rhian Blythe as Anya Flye Alun ap Brinley as Geraint Jernigan Charlie Spring as Boxing Instructor Owen Arwyn as Shane Reardon Beth Robert as Rhona Baldini Lukasz Biela as Odessa Foods Owner