For one hundred and fifty-five days, Will Foster has been locked in medical quarantine without his consent. The doctors claim he is infected with a deadly virus, but this is a devious lie. Encoded in his DNA is an unprecedented mutation, source code for immunity against disease that Vyrogen Pharmaceuticals will stop at nothing to commercialize. Against all odds, Will escapes from his laboratory prison carrying a vial of bubonic plague before his captors can unravel the secret locked inside him. Vyrogen will never stop hunting him. Will is pursued throughout Prague and then Vienna by mercenaries as well as by an elite think tank hired by Vyrogen to capture him before he can spill his secrets to the world.