The documentary Presunto culpable (Presumed Guilty) follows the case of José Antonio Zúñiga, sentenced to 20 years in prison for murder. The lawyers Roberto Hernández and Layda Negrete took up his case. They found that the lawyer appointed to defend him had no valid license. The authorities agreed to a new trial, with the same judge presiding.
The film opened in Mexican cinemas on February 18, 2011. On March 2, a federal judge suspended its screenings at the request of a witness who appeared in it. A higher court lifted the order, and in two weeks the film took more than 18 million pesos at the box office.