La ligne de vie

24 December 1916. On the other side of a German checkpoint, a truck carrying mail is stopped, riddled with bullets. Inside, a man is dead. Another man and a woman, on a postal mission, proclaim their innocence in the death of their travelling companion and their presence in enemy territory. The radio that was guiding them had apparently cut out until they found themselves in no man's land. ‘It's impossible that they could have passed the roadblock unless they were working for the Germans.’ And so, on Christmas Eve 1916, a cross-examination began to uncover the real reason for the presence of enemy postmen and couriers in the trenches.