Matthew Rhys Billy Winters Actor Ann Skelly Beth Winters Actor Jamie Dornan Liam Ward Actor Charlene McKenna Mercy Boyle Actor Sean McGinley Bishop Donnelly Actor Aoibheann Mullan Young Beth Actor Francis Magee Mickey Dolphin Actor Michael Smiley Dummy McGonnell Actor Martin McCann Frank Blessing Actor Frankie McCafferty Tommy Martin Actor Paul Kennedy CI Joseph Quinn Actor Valene Kane Catherine Winters Actor Eugene O'Hare Constable Shanley Actor Allan Cubitt Director, Writer, Executive Producer Jonathan Cavendish Producer Tommy Bulfin Executive Producer Phil Robertson Executive Producer