The attack on the World Trade Center and the Pentagon was not only the most devastating terrorist attack in history, it was also the biggest failure of U.S. intelligence since Pearl Harbor. FRONTLINE correspondent Lowell Bergman and The New York Times investigate why the CIA and FBI failed to uncover the hijackers dramatic plot to strike at the heart of the U.S. government and its economy. The film also examines the U.S. failure to understand fully the hatred for America among Muslim fundamentalists, and its roots in the U.S. government's support for Israel and for authoritarian regimes in the oil-rich Middle East. A FRONTLINE co-production with The New York Times, this special episode is anchored by Bill Moyers.