The Master's House was home to the Master of Knorth, the Highlord. It exists in all threshold worlds; different rooms lead into different worlds, and when the Kencyrath had to abandon a world to Perimal Darkling, that world's room would be sealed off. When Gerridon betrayed the Kencyrath in the Fall, he took the Master's House within Perimal Darkling, and opened all the rooms to each other. Jame remembers later that she had tried to escape the Master's House by arson, flight and amnesia, but was still carrying the thing in her soul as her soul-image.