The Death Knell(1914)

Original title: Dødsklokken

Death’s bells toll in tune to the march of war. On top of devastating losses, espionage also cripples General Müller’s army. Young Lieutenant Charley is entrusted with the delivery of Dossier 15, a document of utmost importance to the war effort. After a dangerous journey through enemy territory, Adjutant Bertram betrays him – it turns out that he’s spying for the enemy. Bertram replaces Dossier 15 with a worthless piece of paper which leads to Charley’s arrest. Charley must escape to avoid execution and expose the spy. (Stumfilm.dk)