Rex Matheson is a CIA agent at the top of his game. Ruthless, brilliant and destined for fast-track promotion, nothing's going to stop this man from getting whatever he wants in life. But when the world convulses under Miracle Day, Rex discovers that everything he thought was true and safe and fair is now in danger. And when the CIA itself turns against him, Rex finds himself on the run. The only people he can trust are some strangers from a long-lost British institute called Torchwood. Rex finds himself traveling across continents as the scale and ambition of the threat is revealed - but in trying to save the world, will he put his own life at risk once too often?