The German The Haunted Castle (Schloss Vogelrod) has been described as director F.W. Murnau's "warm-up" for his subsequent Nosferatu. At this point in his career, Murnau was more interested in effects than in story or characterization, but those effects were among the best within the boundaries of Germany's "Caligari School." The cast included Paul Hartmann, Arnold Korff, Paul Bildt and Olga Tschenova.
by Hal Erickson synopsis