Some detainees died in the facilities. This picture from a U.S. court martial file, drawn by military polygraph examiner George Chigi III, shows how Afghan detainee Dilawar was shackled by his wrists to the ceiling of an isolation cell at Bagram Air Base before being beaten to death in December 2002. The notation about common peroneal strikes -- a knee strike targeting a nerve near the knee, intended to cause paralyzing pain -- is a reference to the number of times that then-Private First Class Willie Brand admitted during an interview session to hitting Dilawar.

• Read the McClatchy special package "Guantanamo: Beyond the Law"
• Watch the video about the eight-month investigation.
• See a database of 66 detainee profiles.