Det hemmelighedsfulde X
- Yıl: 1914
- Ülke: Denmark
- Tür: Gizem, Dram
- Stüdyo: Dansk Biograf Compagni
- Anahtar kelime: traitor, cruise, lieutenant, cruise ship
- Yönetmen: Benjamin Christensen
- Oyuncular: Benjamin Christensen, Karen Sandberg, Fritz Lamprecht, Amanda Lund, Hermann Spiro, Svend Rindom