Many of the films produced in this period were of a lower quality than those of established film-producing nations like France, Great Britain, Denmark, Germany and Italy. But among the mass of low-grade productions there were also films by producers and directors who attached importance to quality. Consequently, the expressionist style of film-making had its beginnings not only in German but also in Austrian cinema, for example in Paul Czinner's "Inferno" (1920). The script of one of the most important German expressionist films, "The Cabinet of Dr. Caligari" (1920), was written by two Austrians, Carl Mayer and Hans Janowitz. They, along with Fritz Lang and Paul Czinner, also worked in Berlin at that time as Berlin was the centre of the German-language film industry. The Austrian Fritz Kortner, who worked in both Germany and Austria - for example in Austrian pre-expressionist productions such as "Der Mandarin" (1918) - was one of the most noted expressionist actors. The best known Austrian expressionist film is "The Hands of Orlac" (1924) by German director Robert Wiene which starred Conrad Veidt and Fritz Kortner.