As shocking as it was, it had been long in the making: The assault was the most sophisticated and horrifying in a series of operations masterminded by Osama bin Laden and his Jihad group -- an organization that CNN's terrorism analyst Peter Bergen calls Holy War, Inc.

One of only a handful of Western journalists to have interviewed the world's most wanted man face to face, Peter Bergen has produced the definitive book on the Jihadist network that operates globally and in secrecy. In the course of four years of investigative reporting, he has interviewed scores of insiders -- from bin Laden associates and family members to Taliban leaders to CIA officials -- and traveled to Afghanistan, Yemen, Egypt, Pakistan, and the United Kingdom to learn the truth about bin Laden's al Queda organization and his mission.