The Peña Nieto government is trying to close the case of the students' disappearance, but there are inconsistencies in the official version.

Thanks to the survivors, the GIEI discovers the existence of a fifth bus attacked on the night of the disappearances.

A secret file discovered by the GIEI suggests that high-ranking officials and the military were involved in the disappearance.

President López Obrador shields the army from the investigation by the Attorney General's Office.