In China's vast northwestern region, more than a million and a half Muslims have vanished into internment camps and associated factories. Based on hours of interviews with camp survivors and workers, thousands of government documents, and over a decade of research, Darren Byler, one of the leading experts on Uyghur society uncovers their plight. Revealing a sprawling network of surveillance technology supplied by firms in both China and the West, Byler shows how the country has created an unprecedented system of Orwellian control.A definitive account of one of the world's gravest human rights violations, In the Camps is also a potent warning against the misuse of technology and big data.