A mother prays that she will one day know the truth about what happened to her son.
In Mexico, the investigation of the attack on students leaves key questions unanswered, but a DEA agent thousands of miles away thinks he knows why they were ambushed.
In 2014, students from a rural college in Mexico came under attack by police. Six people were killed and 43 young men disappeared without a trace.
Don't miss a story. Get our investigations and reporters’ insights delivered to your inbox.
From the beginning, families questioned the official story in the disappearance of 43 Mexican students. Now there’s a new search for the truth.