Diario segreto di un pazzo was released in the year 1963。Diario segreto di un pazzo is also called as Diary of a Madman, Tagebuch eines Mörders, Murhaajan päiväkirja, Horla, Diário de um Louco, Étrange destin du juge Cordier。

Simon Cordier, a sculptor possessed by an evil spirit, hires a model to pose for him then learns thereafter that she has been brutally murdered.