"It's dark inside. No lights. And they can punish you in isolation by coldness or by the heat. They have special air conditioners over there. Very strong. They can turn it very cold or very hot," Kurnaz says.
He says it went on year after year, always the same questions about al Qaeda, and the endless effort to break his will. He heard nothing from the outside and wondered whether anyone knew that he was there.
Then, in 2004, the U.S. Supreme Court ruled that Guantanamo prisoners did have the right to lawyers. And to his complete surprise, one day Kurnaz was told he had a visitor. It was Baher Azmy, an American lawyer.
"He was chained to a bolt in the floor around his ankle," Azmy says, recalling his first meeting with Kurnaz. "And had an absolutely enormous beard that had marked the years that he was in detention. He looked like someone who had been shipwrecked, which, of course, in a sense, he really was."
Azmy is a professor at the Seton Hall Law School. He dug into the case and found that the military seemed to have invented some of the charges. Military prosecutors said one of Kurnaz's friends was a suicide bomber, but the friend turned up alive and well in Germany.
"How could they have gotten that so wrong? I mean, you're either a suicide bomber or you're not. There's no in between," Pelley remarks.
"This goes to the utter preposterousness of the government's legal process that they established in Guantanamo, this tribunal system that was supposed to differentiate from enemy combatant and civilian. So in order to justify that he was an enemy combatant, they simply made up an allegation about someone he was associated with," Azmy says.
But far worse than the false charges was the secret government file that Azmy uncovered.
Six months after Kurnaz reached Guantanamo, U.S. military intelligence had written, "criminal investigation task force has no definite link [or] evidence of detainee having an association with al Qaeda or making any specific threat toward the U.S."
At the same time, German intelligence agents wrote their government, saying, "USA considers Murat Kurnaz's innocence to be proven. He is to be released in approximately six to eight weeks."
But Azmy says Kurnaz was kept at Guantanamo Bay for three and a half years after this memo was written in 2002.