Watch Dark Matter for Free: How to Stream the Movie Online at 123Movies. . Audiovisual footage from the 54,000 page report, divided into 85 volumes (with 13 appendices) about the Iguala Case (the disappearance and presumed murder of 43 student activists by an organized crime group, in collusion with the local government in southern Mexico), made public by the federal attorney general office (PRG) in 2015.