Working in war zones while treating the sick and wounded, Dr. Calista St. James was used to being under siege. But now, her team had been deliberately infected with a dangerous virus--and all signs pointed to it being an inside job.

Before Calista could expose the traitor, she had to travel worlds away with black-ops agent Damian De Luna--a man she didn't trust--to find the cure. Radical steps were needed to stop this deadly outbreak--but could Calista stop the breakdown of everything she'd dedicated her life to fighting for?