Seven Footprints to Satan (1929)
Seven Footprints to Satan is a 1929 American dark comedy film directed by Danish filmmaker Benjamin Christensen. Based on the book of the same name by Abraham Merritt, it stars Thelma Todd, Creighton Hale, William V. Mong and Sheldon Lewis, and contains appearances by Sojin and Angelo Rossitto among others. It was produced as both a silent film and as a part-talkie, making it one of the last (if not the last) silent horror films.
More at Wikipedia.