"All right. You've covered your ass, now."

The book's opening anecdote tells of an unnamed CIA briefer who flew to Bush's Texas ranch during the scary summer of 2001, amid a flurry of reports of a pending al-Qaeda attack, to call the president's attention personally to the now-famous Aug. 6, 2001, memo titled "Bin Ladin Determined to Strike in US." Bush reportedly heard the briefer out and replied: "All right. You've covered your ass, now."

Three months later, with bin Laden holed up in the Afghan mountain redoubt of Tora Bora, the CIA official managing the Afghanistan campaign, Henry A. Crumpton (now the State Department's counterterrorism chief), brought a detailed map to Bush and Cheney. White House accounts have long insisted that Bush had every reason to believe that Pakistan's army and pro-U.S. Afghan militias had bin Laden cornered and that there was no reason to commit large numbers of U.S. troops to get him. But Crumpton's message in the Oval Office, as told through Suskind, was blunt: The surrogate forces were "definitely not" up to the job, and "we're going to lose our prey if we're not careful."

Suskind titles one chapter "Zawahiri's Head," ...Bush, who was tracking the transaction, reportedly told a briefer -- "half in jest," Suskind writes -- that "if it turns out to be Zawahiri's head, I hope you'll bring it here." It turned out to be someone else's.