A successful and renowned conductor of a major symphony orchestra in São Paulo is married to a beautiful and talented violinist, close to thirty years his junior. But his happiness is undermined by two fears: that he will never wholly share her life because, unlike her, he is not Jewish; and that she will be unfaithful to him. Jealousy - beyond the reach of reason - haunts his every moment, gnawing at his trust, his love, and ultimately his sanity. Black Waltz opens a fascinating and harrowing window into a mind bordering on paranoia and psychosis.