This Mexican lobby card for Diary of a Madman, based on the Guy de Maupassant short story, The Horla, makes sure to show Vincent Price's patented sinister stare to best effect. The essential model of the Horla, an unseen, unknown, maliciously intending alien entity moving from host to host, is now an often used one in science fiction and horror movies. The Horla is often mentioned as H.P. Lovecraft's inspiration for The Call of Cthulhu.
