You see the Duke in his aged form, barely able to stand, much less fight you himself as he accuses you of treason, among other things. He believes that you took the Great Dragon's bargain, which is causing him to wither and die so that you may take the throne. Exclaiming now that instead of killing Grigori, you are in league with the dragon and have wrought destruction with dark magic. The soldiers, including Ser Maximillian, proceed to pursue you.