Roberto Hernández was trained as a lawyer in Mexico and Canada, and had no particular interest in cameras or film until he found himself collecting statistics at the basement of Mexico City's Superior Court, which houses the archived legal cases of one of the largest cities in the world. What he saw inspired him and his wife Layda to make “El Túnel,” a short documentary that presented scandalous facts about Mexico's justice system. As a result of the support the film received, in 2008 Mexico's Congress eventually passed the most significant amendment to its Constitution's due process clause, requiring public trials and the presumption of innocence. However, the implementation of this reform is hardly progressing at all. In June 2006, the desperate friends and relatives of an inmate saw the names of Roberto & Layda in the newspapers, and contacted them, pleading for help.