Since 9/11, one important question has persisted: What was really going on behind the scenes with intelligence services and government leaders during the time preceding that terrible day? After an eighteen-month investigation, Gerald Posner reveals much previously undisclosed information, including details about a secret deal between Saudi Arabia and Osama bin Laden; how the U.S. government missed several chances to kill or capture bin Laden; how the CIA tracked–and then lost–two of the hijackers when they entered the United States months before the attacks; the devastating consequences of the crippling rivalry between the CIA and FBI; and the startling account of top al Qaeda captive whose information subsequently led to a trail of mysterious deaths of Saudi Arabian princes and Pakistani military leaders.

Why America Slept exposes the frequent mistakes made by law enforcement and government agencies, and demonstrates how the failures to prevent 9/11 were tragically not an exception but typical. In the end, Posner makes a damning case that the terrorist attacks could have been prevented.