A Brady motion is a formal request made to the court to compel the prosecution to turn over any evidence that might be favorable to the defense. Section 9-5.001 of the United States Attorney's Manual describes the Department's policy for disclosure of exculpatory and impeachment information.A Brady motion is a defendant's request that the prosecution in a California criminal case turns over any potentially "exculpatory" evidence. Peace officers are typically provided with written notice when their names are entered into the "Brady" system. The Brady rule, named after Brady v. Maryland, requires prosecutors to disclose material, exculpatory information in the government's possession to the defense. The court has noted that the. Pitchess laws may raise constitutional problems if they preclude prosecutor access to Brady material in officer personnel files.