The final chapter of our three-part investigation into the abduction of 43 Mexican students in 2014 looks at how an unexpected turn in Mexico’s politics leads to a new investigation with Omar Gómez Trejo as special prosecutor.

With the election of Andrés Manuel López Obrador as president, Mexico’s investigation into the missing students is reopened, and Gómez Trejo gathers evidence to indict members of the previous government for manipulating evidence and forcing confessions. We hear an exclusive interview with a man who was the victim of torture and learn that a former top official in the original investigation is under indictment.

Reveal’s Anayansi Diaz-Cortes and our partner Kate Doyle look at what current investigators are learning about the attack on the buses and what happened to the students who were taken away by local police. They visit Cristi Bautista, the mother of one of the missing students. Seven years after her son Benjamin disappeared, she continues to pray that she will one day know the truth about what happened to him.