The subsequent police-like investigation that Grant undertakes during the remainder of the novel in order to find some circumstantial evidence that Richard (or anyone else) disposed of the princes reveals that there never was a Bill of Attainder, Coroner's inquest, or any other legal proceeding that contemporaneously accused – much less convicted – Richard III of any foul play against the Princes in the Tower. It also points out that the princes were not reported missing by anyone until after the Battle of Bosworth Field, by which time Richard was dead and the princes were now in Henry VII's custody in the Tower. Grant comes to the conclusion that Henry is a much more likely perpetrator of the dual regicide than Richard when the question of 'who instigated the killing of the princes?' is approached from the traditional crime detection perspective of means, motive and opportunity – particularly motive.