"In the last days of the First World War, socialist revolution swept across Germany, sending Kaiser Wilhelm into exile and transforming Berlin into a battleground. But for Detective Inspector Nikolai Hoffner and his young assistant, Hans Fichte, the revolution is a mere inconvenience. Four women from the slums of Berlin have turned up dead, all with identical markings etched into their backs, and Hoffner and Fichte have spent the better part of six weeks trying to crack the bizarre case." "Things take a troubling turn when the political police begin to show an interest in Hoffner's investigation. Hoffner has no idea why the Polpo would want to get their hands dirty with a serial murderer, until he is shown the lifeless body of Rosa Luxemburg, the same eerie markings on her back. Rumors abound that Rosa, one of the leaders of the suppressed socialist uprising, was assassinated by an angry mob, but the pattern carved into her back tells a different story."