In this document, Amnesty International again calls on the Sudanese government to admit the massive violations which have occurred in Darfur and to address them in good faith by full, independent and impartial investigations. It also calls on the Government to immediately stop arbitrary arrests, detentions and torture in Darfur and Khartoum. Sections of this report consider: Problematic access to justice; Arbitrary arrests and detentions; Torture; Government investigations of human rights violations and perpetrators in Darfur; Unfair trials; and witness testimonies. It includes conclusions and recommendations.