Stuart's wrongdoing in the Bennett case wasn't his only act of misconduct. He manipulated evidence in another case, and that conviction wound up being reversed by the courts, too. But his bosses took no action after that misconduct became known. A state disciplinary committee reprimanded Stuart, but that fact remained secret from the public. Indeed, Stuart's superiors did not act until another conviction was overturned, and Stuart was found to have lied to a trial judge about the whereabouts of a key defense witness.

That, at last, cost Stuart his job.

Stuart's career, across many years and with repeated abuses, helps demonstrate a broader truth: New York's system of attorney oversight is ill-equipped or unwilling to identify, punish and deter prosecutors who abuse their authority.

A ProPublica analysis of more than a decade's worth of state and federal court rulings found more than two dozen instances in which judges explicitly concluded that city prosecutors had committed harmful misconduct. In each instance, these abuses were sufficient to prompt courts to throw out convictions.

Yet the same appellate courts did not routinely refer prosecutors for investigation by the state disciplinary committees charged with policing lawyers. Disciplinary committees, an arm of the appellate courts, almost never took serious action against prosecutors. None of the prosecutors who oversaw cases reversed based on misconduct were disbarred, suspended, or censured except for Stuart. (Stuart declined repeated requests for an interview for this story.)