What would happen if terrorists got their hands on a virus -- a terrifying mix of Ebola, hepatitis, and bubonic plague -- with the potential to wipe out humanity? This is the crisis that Derek Stillwater faces as troubleshooter for the U.S. Department of Homeland Security. A specialist in biological and chemical weapons, he's in a breathtaking race to find the terrorist thieves and destroy Chimera M13. There's little evidence, except for the recording of a familiar voice that reminds him of an army buddy who's dead. Questioning his sanity and failing to keep his panic attacks at bay, Stillwater has no choice but to follow his instincts while scientists work on a vaccine in Washington, D.C. He just might have a chance in hell of ending the madness -- if only the government's most experienced immunological researcher hadn't become infected.