The poster child of the American torture program sits in a Guantanamo Bay prison cell, where many U.S. officials hope he will simply be forgotten. Zayn al-Abidin Muhammad Husayn, known to the world as Abu Zubaydah ... was the guinea pig" of the CIA torture program. He was the first prisoner sent to a secret CIA "black site," the first to have his interrogation "enhanced " and the only prisoner subjected to all of the CIA's approved techniques, as well as many that were not authorized. He is the man for whom the George W. Bush administration wrote the infamous torture memo in the summer of 2002. Senior officials thought he had been personally involved in every major al-Qaeda operation, including 9/11. Today, the United States acknowledges that assessment was, to put it graciously, overblown. His extended torture provided no actionable intelligence about al-Qaeda's plans. He has never been charged with a violation of U.S. law, military or civilian, and apparently never will be formally charged. Instead, he languishes at Guantanamo. After years in secret prisons around the world, he remains incommunicado, with no prospect of trial. Who is Zubaydah, really? Public understanding about Zubaydah remains remarkably controlled and superficial. In connection with Zubaydah's stalled case seeking federal court review of his detention, the government has recently agreed to clear for public release a few of the letters he has written to us. These brief letters [are] published here for the first time.