Megan Crespi is back in Europe researching for a biography on "the other Mendelssohn," Felix's sister Fanny, also a prolific and until recently long overlooked composer. She is joined by three colleagues from the fields of music, museum, and photography. They encounter a spate of antisemitic demonstrations masterminded by neo-Nazi organizations in the two German cities associated with the Mendelssohns, Hamburg and Berlin. American composer Simon Saragon's groundbreaking A Jewish Requiem premieres at a historic Berlin synagogue with dire results. Following Fanny's footsteps in Italy, where Megan discovers an unknown oil portrait of Fanny, our Mendelssohn Quartet is confronted by a neo-Fascist in Rome's fabled bohemian Caffè Greco. Upon reaching Fanny's beloved Terracina on Italy's southern coast and the island of Ponza, their lives are threatened. Can rescue on this isolated island be on its way?