This Essay takes the Supreme Court’s recent decision in Connick v. Thompson as a point of departure for examining the efficacy of professional responsibility measures in combating prosecutorial misconduct. John Thompson, the plaintiff in Connick, spent fourteen years on death row because prosecutors concealed exculpatory blood evidence from his defense attorneys. In rejecting Thompson’s attempt to hold the New Orleans District Attorney’s Office civilly liable for failing to train its prosecutors in proper discovery procedures, the Connick Court substantially narrowed one of the few remaining avenues for deterring prosecutorial misconduct. Implicit in the Court’s reasoning was a belief that district attorneys’ offices should be entitled to r...