Devlin

It starts with the unthinkable--the most horrific act of violence ever committed on American soil. Only one man can stop them. Hostile Intent Code named Devlin, he exists in the blackest shadows of the United States government--operating off the grid as the NSA's top agent. He's their most lethal weapon. . .and their most secret. But someone is trying to draw him out into the open by putting America's citizens in the crosshairs--and they will continue the slaughter until they get what they want.

All Enemies Foreign And Domestic The NSA's most lethal weapon is back. Code-named Devlin, he operates in the darkest recesses of the US government. When international cyber-terrorists allow a deadly and cunning band of radical insurgents to breach the highest levels of national security, Devlin must take down an enemy bent on destroying America--an enemy more violent and ruthless than the world has ever known.