Prosecutorial misconduct refers to inappropriate or illegal actions taken by a prosecutor in the context of a legal proceeding, which can negatively impact the fairness of a trial. This can include withholding exculpatory evidence, making improper statements to the jury, or engaging in unethical behavior that undermines the integrity of the judicial process. Such misconduct can lead to wrongful convictions and exonerations, highlighting the crucial role that prosecutors play in ensuring justice is served.