"They pushed me down onto the floor of the van. There was blood everywhere, on my hands, my knees," Egyptian cleric Abu Omar tells Frontline/WORLD reporter Stephen Grey about being snatched off the street by the CIA. "As we drove along, I started to choke... It felt like I was dying. Then I disappeared from history."

"Somebody came, removed the hood, removed the cuffs, and left me in the shackles," Bisher al-Rawi, a longtime British resident, says of his arrival at an infamous secret CIA "black site" in Afghanistan. "And that was the 'Dark Prison'... It was a very, very cold place. You had some sort of odd voices, not music, playing on speakers. You had people coming to check you were alive - not OK, but alive. [For] the duration of the dark prison I had shackles on. I just took it as it came."

These are among the voices of CIA "ghost prisoners" speaking for the first time on U.S. television as part of Frontline/WORLD's Extraordinary Rendition, an international investigation by the award-winning journalist Stephen Grey of the United States government's controversial, extralegal detention and interrogation program. Grey, the former head of investigations at The Sunday Times of London and the author of the acclaimed book Ghost Plane: The True Story of the CIA's Rendition and Torture Program (St. Martin's, 2006), was one of the first journalists to uncover the secrets of the CIA rendition program. President Bush has publicly defended CIA interrogation methods as legal, despite charges from within his own administration that CIA treatment of "ghost prisoners" was "abhorrent."

Tuesday, 11/6/07 from 10-11 p.m. ET