Guest Stars Harry Unsworth as Rhodri Howells Oscar Unsworth as Rhodri Howells Hannah Daniel as Cerys Jones Mark Lewis Jones as Steve Baldini Eiry Thomas as DI Susan Williams Lacey Jones as Megan Howells Aneirin Hughes as Tom Howells Demi Letherby as Alys Howells Suzanne Packer as Delyth Lloyd Bradley Freegard as Evan Howells Catherine Ayers as Lisa Connors Rhian Morgan as Marion Howells Alex Harries as Arthur Davis 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