Napoleon Bonaparte lost at Waterloo, June 1815. In his haste to retreat he left behind a coach of gold destined to pay mercenaries. Found abandoned by the English General Cornelius Ferguson the gold was temporarily hidden in a Flanders well, but in the turmoil of war the clues to its whereabouts were lost. The village of Tromelles, Somme valley, France 1916. The gold accidentally resurfaces, albeit briefly, found by Australian infantry force sappers - tunnellers - on one of the decisive battlefields of the Great War. But the bullion disappears a second time, lost to the savagery of war once...