**As seen on BBC news** **As featured on BBC Radio 4: Today with Frank Gardner** 'In order to defeat your enemy, you must first understand them.' - Tamer Elnoury Tamer Elnoury, a long-time undercover agent, 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 people in as public and devastating a way as possible. It's a furious race against the clock for Tamer 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 people, it will be a revelation that he and his team even exist, let alone the vital and dangerous work they do keeping all of us safe. It's no secret that federal agencies are waging a broad, global war against terror. Now, for the first time, an active, Muslim American federal agent reveals his experience infiltrating and bringing down a terror cell in North America.