A moving novel about the power of memory and imagination – set both in the horrifying reality of World War I and the virtual world of today. In spring of 1915 the German-Jewish officer Ismar Manneberg writes a letter from the trenches to a woman who does not really exist – addressing it to any old Miss Müller. After all, all of his comrades are sending letters home. Much to his surprise, he gets a reply. Ninety years later a great-nephew finds Ismar Manneberg's photo album, and in it the faded picture of a mirror box. The young man is in the midst of a personal and career-related crisis. When an email arrives from ›WarGirl18‹, who seems to know something about the mysterious mirror box, he completely loses the plot. Events from long ago are charged with an immense explosive force that brings them all the way into the present. A prominent story that you think you already know – told from a radical new perspective.