it calls rectal feeding. interrogation procedures that went on for months. at least one detainee died from hypothermia. >> stripped naked, diaper, physically struck and various painful stress positions for long periods of time. they were deprived of sleep for days, in one case, 180 hours. >> reporter: one had his lunch pureed and poured into his rectum. he attempted to cut his wrist, his wrist and foot. much kept from george w. bush's own secretary of state. >> there are cia records stating that colin powell wasn't told about the program at first because there were concerns that, and i quote, powell would blow his stack if he were briefed. >> reporter: a former top cia official says some details were held close, but that the agency