Diary Of A Madman (1963)
Diary of a Madman is a 1963 American horror film directed by Reginald Le Borg and starring Vincent Price, Nancy Kovack, and Chris Warfield. It follows Simon Cordier, a French magistrate who becomes haunted by a malevolent entity called the Horla after executing a prisoner. As the Horla drives him to madness, Cordier struggles with his sanity and ultimately resorts to drastic measures to rid himself of the entity, leading to tragic consequences.