Hopefully Stephen's story can make a difference to them and others who are currently sitting in a concrete cell 23 hours a day.

CNN: STORY HIGHLIGHTS

The latter became infamous for the 2002 death of a detainee, reportedly from hypothermia, after prison officials stripped him naked and chained him to the floor of his concrete cell, in freezing temperatures.

NEWYORKER: The Black Sites

A. wrongly accused of being a double agent and held for three years in total isolation (no reading material, no news, no human contact except with interrogators) in a closet-size concrete cell near Williamsburg, Virginia, made chess sets from threads and a calendar from lint (only to have them discovered and swept away).

NEWYORKER: Hellhole