Joe Stanton was the only CIA agent to every infiltrate Al Qaeda as both a fighter and strategist for the organization. The information he passed back to the agency stopped dozens of terrorist attacks, saving countless lives, but because of the isolation of four years of solo undercover work, he converted to Islam, not out of any belief in religious truth, but rather a need for a sense of community. And after marrying the daughter of a leading Kuwaiti businessman, he felt whole for the first time in his life. Yet he never once wavered in his loyalty to the United States. But when Joe stumbled...