Extraordinary rendition generally means bypassing international extradition when obtaining custody of a prisoner from a foreign country. It may, for example, avoid formal extradition procedure before the courts, but could still involve an administrative hearing before immigration authorities.
Captives who face extraordinary rendition may or may not have an opportunity to challenge the justification for their transfer. Such captives would typically make their challenge to the immigration authorities in that country, if they are not citizens of it, rather than to its courts.
Legal distinctions have been drawn between secret rendition when there is, or is not, the possibility of torture.