Nine Lives: My Time as the West's Top Spy inside al-Qaeda

As one of al-Qaeda's most respected bomb-makers, Aimen Dean rubbed shoulders with the mastermind of the 9/11 attacks and swore allegiance to Osama bin Laden himself.

As a double agent at the heart of al-Qaeda's chemical weapons program, he foiled attacks on civilians and saved countless lives, brushing with death so often that his handlers began to call him their spy with nine lives.

This is the story of how a young Muslim, determined to defend his faith, found himself fighting on the wrong s...