ONE:Grumkow gathered up his papers, and, with his associate officials, departed, probably meditating upon his own prospects should the Crown Prince ever become King of Prussia. The next day, September 5, the captive was taken from the castle of Mittenwalde, and sent to the fortress of Cüstrin, a small and quiet town about seventy miles from Berlin. The strong, dungeon-like room in which he was incarcerated consisted of bare walls, without any furniture, the light being admitted by a single aperture so high that the prince could not look out at it. He was divested of his uniform, of his sword, of every mark of dignity.