"Must read " "The best book I have read in a very long time " "Terrifying? Yes. Shocking? Of course. Could happen tomorrow? ... Let's just say I'm a little worried about America's blood supply." In this fascinating thriller, a virus is sweeping the country, and America's hospitals are no longer safe. Patients across the United States are checking into hospitals for routine procedures but never checking out. Join Dr. Isaac Carlson and his team of medical superstars as they race against the clock to defeat the mysterious illness and save lives.