Towards the end of the war as the Germans are in their final retreat in November 1918, a British raiding party stumbles across a strange and eerie scene in a ruined chateau, under fire. Following the strains of a familiar tune, and understandably perplexed as to who would be playing the piano in the midst of shellfire, they discover a German officer lying dead at the keys, next to a beautiful woman in full evening dress, also deceased. But the officer is the spitting image of G B Bretherton, a British officer missing in action .

So follows a tale of mystery and identity, first...