Geheimnis um Burg Brethen
- Tahun: 1976
- Negara: Germany
- Genre: Drama
- Studio: Dreamy-Film
- Kata kunci: based on novel or book
- Pengarah: Bert Nosslar
- Pelakon: Ulrich Beiger, Hans Kahlert, Gerd Frickhöffer, Walter Ladengast, Oliver Tiebing, Jochen Paulmann