Guest Stars Geraint Lewis as Dr. Haydn Blake Geraint Morgan as Iwan Thomas Llyr Ifans as Gareth Thomas William Thomas as Robert Owen Richard Lynch as Supt John Powell Gwenno Hodgkins as Elen Prosser Gwen Ellis as Agnes Jones Sara Lloyd-Gregory as Catrin John Alun Elidyr as Alwyn Parry 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 Gaynor Morgan Rees as Ethni Vaughan Aled Pugh as Paul Webb Caitlin Richards as Dr. Alison Cleaver