Ryan Cross and the Shadow Squadron have been assigned to recover a chemical weapon that has been stolen by an extremist wing of the Syrian rebels before it can be launched against an unknown target.

A toxic presidential election is underway in an America already badly weakened by internal divisions. While politicians focus entirely on maintaining their own power and privilege, ISIS kidnaps a brilliant French microbiologist and forces him to begin manufacturing anthrax. Slickly-produced videos chronicling his progress and threatening an imminent attack are posted to the Internet, intensifying the hysteria gripping the U.S. ISIS recruits a Mexican...