This report documents a pattern of abuse under Morocco's counterterrorism law, which was adopted 12 days after coordinated suicide bombings in Casablanca on May 16, 2003, took 45 lives. Many of these abuses violate the progressive legislation Morocco adopted to safeguard against torture and illegal detention, as well as international conventions that Morocco has signed. The report is based in part on interviews conducted with persons detained under the counterterrorism law between 2007 and 2010 and their relatives. It includes a response from the Moroccan government, which Human Rights Watch welcomed.