U.S. Army Special Forces Major Charley Castillo is tasked with a discreet mission by the President himself: to investigate the death of an American diplomat in Argentina and the kidnapping of that diplomat's wife. With the woman's children and family now at risk, Castillo's running out of time to uncover the connections and truth behind it all. Amidst threats, murder, and a scandal tying the United Nations to Iraq, there is also a lot of money flying...

Delta Force officer Charley Castillo finds his investigation in Argentina foiled by an American officer trying to sneak into the safe house, who begs for Charley's help in freeing a DEA agent who has disappeared behind enemy lines.

Charlie Castillo's secret unit has been disbanded, but that doesn't mean he's out of business. A FedEx package arrives, bearing photos of barrels containing some of the most dangerous biohazard materials on Earth, all of which were supposed to have been destroyed during a raid on a secret Russian factory in the Congo. Who has them, and what do they want? Castillo has a feeling he's not going to like the answers.

"The Presidential Agent adventures return in the most harrowing novel yet in the #1 New York Times-bestselling series. Mexican drug cartels are shooting up the streets of Laredo and El Paso. Somali pirates are holding three U.S. tankers for ransom. The President is fed up and has what he thinks is a pretty bright idea-to get hold of Colonel Charley Castillo and his merry band and put them on the case. Unfortunately, that will be difficult. Everybody...