The Red Pyramid of Bishara [ is known] [[Chronology - Volume #|✣ ]] to have a key. The last (as in, final) keeper of this key, one Ludmilla, was apparently a resident of either Paris or Castle Wulfenbach at the time that both Gil and Tarvek were students there. This was possibly after the key was lost to an adventurer who defeated her champion, Thegon Ba'kont, whom she subsequently married.