I Know This Much is TrueThe #1 New York Times bestselling novel, now a major Sky Atlantic drama starring Mark Ruffalo as two identical twins, Thomas and Dominick. Dominick Birdseys whole existence is coloured by the knowledge that his twin brother can never be fully responsible for his frightening behaviour, while he himself has beaten the biochemical odds to remain sane. But at what cost? This powerful, heartwrenching drama draws on the deepest human emotions: the need to