Triple Cross: How bin Laden's Master Spy Penetrated the CIA, the Green Berets, and the FBI--and Why Patrick Fitzgerald Failed to Stop Him This is the most dangerous man I have ever met. We cannot let this man out on the street." —Assistant U.S. Attorney Patrick Fitzgerald, 1997 ~~~~~~~~~~~~~~~~~~~~~~ In the years leading to the 9/11 attacks, no single agent of al Qaeda was more successful in compromising the U.S. intelligence community than Ali Mohamed. A former Egyptian army captain, Mohamed succeeded in infiltrating the CIA in Europe, the Green Berets at Fort Bragg, and the FBI in California—even as...