Stage adaption of tense thriller Gallowglass set to enthral Cardiff audiences. A world stage premiere of Gallowglass, from the pen of one of the world’s greatest thriller writers, Ruth Rendell (writing as Barbara Vine), will play at Cardiff’s New Theatre next week, 30 January – 3 February. It’s a new adaptation written especially for the stage and follows the gritty TV version which aired 25 years ago starring Michael Sheen. In Gallowglass, when Sandor snatches Joe from the path of…