One day he heard a criminal case, which was in preparation and on the point of trial, discussed in a drawing-room. A wretched man, being at the end of his resources, had coined counterfeit money, out of love for a woman, and for the child which he had had by her. Counterfeiting was still punishable with death at that epoch. The woman had been arrested in the act of passing the first false piece made by the man. She was held, but there were no proofs except against her. She alone could accuse her lover, and destroy him by her confession. She denied; they insisted. She persisted in her denial. Thereupon an idea occurred to the attorney for the crown. He invented an infidelity on the part of the lover, and succeeded, by means of fragments of letters cunningly presented, in persuading the unfortunate woman that she had a rival, and that the man was deceiving her. Thereupon, exasperated by jealousy, she denounced her lover, confessed all, proved all. The man was ruined. He was shortly to be tried at Aix with his accomplice. They were relating the matter, and each one was expressing enthusiasm over the cleverness of the magistrate. By bringing jealousy into play, he had caused the truth to burst forth in wrath, he had educed the justice of revenge. The Bishop listened to all this in silence. When they had finished, he inquired,-- "Where are this man and woman to be tried?" "At the Court of Assizes." He went on, "And where will the advocate of the crown (Prosecutor) be tried?"
I prefer NormanDenny's translation of Les Miserables, which replaces advocate of the crown with "Prosecutor", so this is not an endorsement of the translation used