June 1812. Napoleon begins his invasion of Russia leading the largest army Europe has ever seen.But among the troops of the Grande Armee lurks a savage murderer, whose bloodlust is not satisfied in battle. When an innocent Polish woman is brutally stabbed, Captain Quentin Margont is put in charge of of a secret investigation to unmask the perpetrator. Armed with the sole fact that the killer is an officer, Margont knows that he faces a near-impossible task, and the greatest challenge of his military career...