Book excerpt: "British photographer Edmund Clark and counterterrorism investigator Crofton Black have assembled photographs and documents that confront the nature of contemporary warfare and the invisible mechanisms of state control. From George W. Bush's 2001 declaration of the "war on terror" until 2008, an unknown number of people disappeared into a network of secret prisons organized by the U.S. Central Intelligence Agency -- transfers without legal process known as extraordinary renditions. No public records were kept as detainees were shuttled all over the globe. Some were eventually sent to Guantánamo Bay or released without charge, while others remain unaccounted for"--Publisher's description.