This World War I novel is "a mystery as exciting as a good detective story and an extraordinarily vivid account of trench-warfare" (The Sunday Times). In November 1918, as the Germans are in their final retreat, a British raiding party under fire follows the sound of piano music and stumbles across an eerie scene in a ruined chateau. A German officer lies dead at the keys, next to a beautiful woman, also deceased, in full evening dress. But what makes their discovery especially strange is that the man is the spitting image of G. B. Bretherton, a British officer missing in action. This tale of mystery and identity, first published in 1930, is not only an authentic account of the brutal conditions at the battlefront, it's also a remarkable thriller with a twisting, unusual plot that earned it comparisons to John Buchan and the best espionage writers. The Morning Post called it "one of the best of the English war novels"--while Sir John Squire, the influential editor of the London Mercury, went a step further and labeled it "undoubtedly the best." Eric Ambler, the iconic author of such classics as A Coffin for Dimitrios and Journey into Fear, considered it one of the five best spy novels of all time. Fans of war stories and suspense novels alike--and readers of modern WWI tales like Robert Olen Butler's The Star of Istanbul--will find themselves caught up in this lost gem from the Great War era.