The dissertation examines two questions. First, how influential is the spread of the norm of individual criminal accountability in countries that have experienced gross human rights violations during civil wars? Second, what mechanisms can explain the emergence of domestic trials in these cases? Through analysis of data collected during fieldwork in Algeria and Turkey between 2014-2015, this dissertation focuses on the role of individual criminal accountability for enforced disappearances that were carried out in the context of civil war in both countries.