Guest Stars Geraint Lewis as Dr. Haydn Blake Geraint Morgan as Iwan Thomas Llyr Ifans as Gareth Thomas Richard Lynch as Supt John Powell William Thomas as Robert Owen Gwenno Hodgkins as Elen Prosser Gwen Ellis as Agnes Jones Sara Lloyd-Gregory as Catrin John Glain Davies as Paul Webb's Daughter Alex Tabrizi as Hugh Vaughan Miriam Davies as Paul Webb's Daughter Elen Roberts as Maggie Webb Mabli Jên Eustace as Clare Jeffries Alun Elidyr as Alwyn Parry Gaynor Morgan Rees as Ethni Vaughan Aled Pugh as Paul Webb Caitlin Richards as Dr. Alison Cleaver