Shuanggui -

"Shuanggui is an internal disciplinary process conducted by the Central Commission for Discipline Inspection of the Chinese Communist Party (CCP) – and its lower-level affiliates – on members of the Party who are suspected of "violations of discipline," a charge which usually refers to corruption but can occasionally carry other connotations as well. The Shuanggui process is conducted in secret, in a system which is separate from ordinary Chinese law enforcement. Generally, subjects are isolated from any form of legal counsel or even family visits during the process. Some journalists maintain that the practice has been involved in extraordinary renditions. It is an extrajudicial process outside of the control of the Chinese State. - Wikipedia"