Guest Stars Geraint Lewis as Dr. Haydn Blake Geraint Morgan as Iwan Thomas Llyr Ifans as Gareth Thomas Sioned Dafydd as Elin Sian Reese-Williams as Manon William Thomas as Robert Owen Richard Lynch as Supt John Powell Gwen Ellis as Agnes Jones Efa Morris as Young Alys Julian Lewis Jones as Lewis John Rhodri Meilir as Ifan Riley Catrin Arwel as Joanna Miller Eiry Hughes as Anna John Melangell Dolma as Naomi