Guest Stars Catherine Ayers as Sali Siân Reese-Williams as Caryl Huws Annes Elwy as Greta Ella Peel as Ela Morgan Hopkins as Dai Rees Dylan Jones as Young Joe Ioan Hefin as DCI Parry Ifan Huw Dafydd as Wyn Aneirin Hughes as Gafyn Aled Bidder as Rhys Rhian Blythe as Shelley Mari Ann Bull as Young Shelley Hannah Daniel as Izzy Lisa Palfrey as Nina Hannah Mary Dando as Alana Andria Doherty as Bronwen Shelley Rees as Ceri-Ann Mabli Jên Eustace as Young Izzy Tonya Smith as Carwen Llinos Daniel as Detective
