What Belongs to Darkness (German: Die Finsternis und ihr Eigentum) is a 1922 German silent drama film directed by Martin Hartwig and starring Karl Etlinger, Erra Bognar, and Fritz Kortner. The film's sets were designed by the art director Alfred Columbus.
Arthur Robison
Writer
Martin Hartwig
Director

Karl Etlinger
Professor
Erra Bognar
Daughter of the professor

Fritz Kortner
Gangster

Walter Janssen
Young man

Hans Adalbert Schlettow
Prisoner
Waldemar Potier
Daisy Torrens
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