More than 26,000 people were reported missing or disappeared in Mexico between 2006 and 2012. Some are the victims of enforced disappearances in which public officials are implicated. Others have been abducted by private individuals or criminal gangs. Still others may simply have left home without telling anyone. This briefing looks at the scale and nature of different types of disappearances in Mexico, the steps taken so far to address these crimes, and the further urgent measures that the authorities must adopt to end these human rights abuses.