It's Christmas Day, 2067. May Knox floats in space, the only survivor of a catastrophic accident. There is just one person who can save her - her ex-husband Stephen, a NASA scientist who was heading up the mission back on Earth. Until, that is, she broke his heart and he left both her and the mission. As May fights for life, Stephen finds his own life is under threat, putting both of them at risk. A twisty, gasp-inducing thriller.