During the Great War, Hermann Kohler and Jean-Louis St-Cyr fought in Alsace on opposite sides of the barbed wire. Two decades later, they return as partners: a Gestapo officer and a French cop investigating everyday crimes in a world gone mad with war. In February 1943, Alsace is unrecognizable—an occupied country where speaking French is all it takes to lose one’s freedom. St-Cyr and Kohler have been summoned to a POW camp where soldiers and résistants manufacture textiles on the grounds of a deserted carnival. Where industry and warfare overlap, they will find a conspiracy worthy of the most twisted house of mirrors.