- You may be looking for Presidential Inquiry.
The High Council appointed a judicial inquiry into the Sixth Doctor's behaviour (TV: The Mysterious Planet) to cover up their own actions concerning "Ravolox". (TV: The Ultimate Foe) The inquiry was presided over by Inquisitor Darkel (TV: The Mysterious Planet) and half of the High Council sat as jurors. (PROSE: The Eight Doctors)
Darkel was later invited by Coordinator Narvin to lead a judicial inquiry into President Romana's actions on Gryben. (AUDIO: Weapon of Choice) She found that there was not the evidence to impeach her. (AUDIO: The Inquiry)