ABOARD AIR CIA

Like many detainees with tales of abuse, Khaled el-Masri had a hard time getting people to believe him. Even his wife didn't know what to make of his abrupt, five-month disappearance last year. Masri, a German citizen of Lebanese descent, says he was taken off a bus in Macedonia in south-central Europe while on holiday on Dec. 31, 2003, then whisked in handcuffs to a motel outside the capital city of Skopje. Three weeks later, on the evening of Jan. 23, 2004, he was brought blindfolded aboard a jet with engines noisily revving, according to his lawyer, Manfred Gnjidic. Masri says he climbed high stairs "like onto a regular passenger airplane" and was chained to clamps on the bare metal floor and wall of the jet.

Masri says he was then flown to Afghanistan, where at a U.S. prison facility he was shackled, repeatedly punched and questioned about extremists at his mosque in Ulm, Germany. Finally released months later, the still-mystified Masri was deposited on a deserted road leading into Macedonia, where he brokenly tried to describe his nightmarish odyssey to a border guard. "The man was laughing at me," Masri told The New York Times, which disclosed his story last month. "He said: 'Don't tell that story to anyone because no one will believe it. Everyone will laugh.' "

No one's laughing these days, least of all the CIA. NEWSWEEK has obtained previously unpublished flight plans indicating the agency has been operating a Boeing 737 as part of a top-secret global charter servicing clandestine interrogation facilities used in the war on terror. And the Boeing's flight information, detailed to the day, seems to confirm Masri's tale of abduction. Gnjidic, Masri's lawyer, called the information "very, very important" to his case, which is being investigated as a kidnapping by a Munich prosecutor. In what could prove embarrassing to President Bush, Gnjidic added that a German TV station was planning to feature Masri's tale ahead of Bush's much-touted trip to Germany this week. German Interior Minister Otto Schily recently visited CIA Director Porter Goss to discuss the case, and German sources tell NEWSWEEK that Schily was seeking an apology. CIA officials declined to comment on that meeting or any aspect of Masri's story.

The evidence backing up Masri's account of being "snatched" by American operatives is only the latest blow to the CIA in the ongoing detention-abuse scandal. Together with previously disclosed flight plans of a smaller Gulfstream V jet, the Boeing 737's travels are further evidence that a global "ghost" prison system, where terror suspects are secretly interrogated, is being operated by the CIA. Several of the Gulfstream flights allegedly correlate with other "renditions," the controversial practice of secretly spiriting suspects to other countries without due process. "The more evidence that comes out, the clearer it is that there's been a stunning failure of accountability," says lawyer John Sifton of Human Rights Watch.

CIA officials are increasingly fretful about being saddled with this secret prison network at a time of intense pressure from lawyers and human-rights activists. The CIA's anxiety only deepened last week when President Bush named John Negroponte, his ambassador to Iraq, as the country's first director of national intelligence. Negroponte, a demanding career diplomat, will take over the coveted president's daily brief, or PDB, from Goss. Bush sought to reassure the CIA that it would still be welcome in the Oval Office. But Bush also signaled that Negroponte would preside over a major shift in power in intelligence gathering. "John and I will work to determine how much exposure the CIA will have to the Oval Office," the president told reporters.

While it battles for influence in Washington, the agency is also fighting a rear-guard action against critics at home and abroad. Some CIA officials fear the White House is now exposing them to legal peril. New Attorney General Alberto Gonzales, under pressure while he awaited his confirmation hearings late last year, repudiated a controversial August 2002 memo that CIA officials carefully solicited from the Justice Department for legal authorization on renditions and the agency's treatment of Qaeda prisoners. Today the CIA has dozens of detainees it doesn't know how to dispose of without legal procedures. "Where's the off button?" says one retired CIA official. "They asked the White House for direction on how to dispose of these detainees back when they asked for [interrogation] guidance. The answer was, 'We'll worry about that later.' Now we don't know what to do with these guys. People keep saying, 'We're not going to shoot them'."