Fallen Soldiers (2015)

Set in Europe 1815. During the war which rages across the continent a noble couples coach is hijacked by a desperate British soldier. At gunpoint, the soldier spins an outlandish tale of plagues, conspiracies, and dead men returning from the grave. He begs for help. So to trust this madman, or kill him? It's a decision that could save or damn thousands, and turn the tide of the war.