This thesis is an artefact documenting the process of adapting a late medieval painting of hell into a short horror film. The process of adapting the Three Mouths of Hell, housed within the Hours of Catherine of Cleves, serves as an experiment in applying a dramaturgical approach to medieval studies. The process of adaptation and production, informed by critical research about the Hours of Catherine of Cleves and its Three Mouths of Hell, yields new frameworks for understanding the history of Catherine of Cleves, her Book of Hours, and the Three Mouths of Hell.