The Nazi's little brother may have been the Nazi's half-little brother. People noticed he did not much resemble the Nazi, or any of the other men in his family, though he did resemble his Jewish godfather. In retrospect, observers drew conclusions. Not because they cared about genealogy, but because physical discrepancy offers a tidier explanation for how a man can grow up alongside one of the Reich's most notorious figures yet inherit an entirely different set of reflexes.

Some people believe difference derives from blood, that a person's bent is inscribed as unmistakably as a jawline. Anything else would mean permitting the possibility of moral choice, an idea many find inconvenient.

The little brother grew up inclined toward quiet pursuits--design, film, wandering conversation--with n

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