A young NASA doctor must fight a lethal microbe that’s multiplying in the deadliest of environments-space-in this acclaimed blockbuster of medical suspense from Tess Gerritsen, bestselling author of Harvest, Life Support, and the Rizzoli and Isles series.

Dr. Emma Watson has been training for the experience of a lifetime: to study living beings in space. But her mission aboard the International Space Place becomes a headache beyond imagining when a culture of single-celled organisms begins to regenerate out of control-and infects the area station staff with agonizing and fatal results. Emma problems to contain the outbreak while back on Earth her estranged husband, Jack McCallum, functions frantically with NASA to bring her house. But you will see no recovery. The contagion today threatens Earth’s people, as well as the astronauts are stranded in orbit, quarantined aboard the station-where they are dying one at a time…