So begins Army interrogator Tony Lagouranis's first briefing at Abu Ghraib. When the U.S. went to war with Iraq, Lagouranis-who joined the Army prior to September 11-was tapped to be an interrogator in places like Abu Ghraib and Fallujah. He believed in his mission, but he soon discovered that pushing the legal limits of interrogation was encouraged. Under orders, he-along with numerous other soldiers-abused and terrorized hundreds of prisoners by...