Seventeen years after the fall of the Third Reich, Max Weill has never forgotten the atrocities he saw at Auschwitz—nor the face of Dr. Otto Schramm, a camp doctor who worked with Mengele on appalling experiments and who sent Max’s family to the gas chambers. As the war came to a close, Schramm was one of the many high-ranking former Nazi officers who managed to escape Germany for new lives in South America. On his death bed, Max asks his nephew Aaron Wiley—an American CIA desk analyst—to complete the task Max never could: to track down Otto in Argentina, capture him, and bring him back to Germany to stand trial.
Aaron travels to Buenos Aires and discovers a city where Nazis thrive in plain sight, mingling with Argentine high society. He ingratiates himself with Otto’s alluring but wounded daughter, whom he’s convinced is hiding her father. Enlisting the help of a German newspapers reporter, an Israeli agent, and the obliging CIA station chief in Buenos Aires, he hunts for Otto—a complicated monster, unexpectedly human but still capable of murder if cornered.