Love, murder and Kabbalah. Blume Liebes, the printer's widow from a distinguished rabbinical family, has always been headstrong. And now she has taken it into her head to marry, of all people, the reclusive outsider Nate, who inexplicably fascinates her. Too late she learns that he is marked with a terrible mark of Cain. Did Nate, once a promising young scholar, really slay the son of Menachem Mendel, the great master of the Kabbalah? "A wonderful detective story from a distant time" (Der Tagesspiegel)