It's no secret that federal agencies are waging a broad, global war against terror. But for the first time, in this memoir, an active Muslim American federal agent reveals his experience infiltrating and bringing down a terror cell in North America.

A longtime undercover agent, Tamer Elnoury joined an elite counterterrorism unit after September 11. Its express purpose is to gain the trust of terrorists whose goals are to take out as many Americans in as public and devastating a way as possible. It's a furious race against the clock for Elnoury and his unit to stop them before they can implement their plans. Yet as new as this war still is, the techniques are as old as time: listen, record, and prove terrorist intent.

Due to his ongoing work for the FBI, Elnoury writes under a pseudonym. An Arabic-speaking Muslim American, a patriot, a hero: To many Americans, it will be a revelation that he and his team even exist, let alone the vital and dangerous work they do keeping all Americans safe.