In The Trial of Hissein Habré: The International Crimes of a Former Head of State, Emmanuel Guematcha recounts the trial of Hissein Habré, the former Head of State of Chad. Accused of committing crimes against humanity, war crimes, and torture while he ruled Chad between 1982 and 1990, he was tried and sentenced to life imprisonment in 2016 and 2017 by the African Extraordinary Chambers. Guematcha examines the process that led to this achievement in Africa, including the failed attempts to try Hissein Habré in the Senegalese, Chadian, and Belgian courts. Guematcha discusses the mobilization of victims and the involvement of non-governmental and international organizations. He describes the particularities of the Extraordinary African Chambers, discusses the establishment of Hissein Habré's criminal responsibility, and presents the trial through the testimonies of several victims, witnesses, and experts. These testimonies shed light on what it means for individuals to be subjected to international crimes. The author also questions the impact and significance of the trial in Africa and beyond.