It's discovered that Strange Taffy is actually the headmaster. After Randy finds him caught in a whirlpool, he takes it(Strange Taffy) to the castle, where the other prefects are. There, Strange Taffy transforms into the headmaster. At the beginning he's confused and doesn't recognize his whereabouts, but after seeing the prefects he realizes that he has been discovered. Klaus arrives at that moment and, no longer addressing formally to the headmaster, explains to the group that the headmaster has been conspiring all this time to revive the Dragonkins. This has lead to use the prefects to do certain things without them to truly know the meaning behind such actions. Hiro confesses to the prefects that he was indeed the person that stole the cameo of the Kingdom of Daylight's king in the Moonlight Butterfly case (Klaus II's route). And therefore, disclosing that it was the headmaster whom Hiro was talking to at the end of his route and he was the one who wanted to use BBW for his purposes (Hiros' route). Klaus says that Rembrandt was the one controlling the Minotaur (Zeus' route) and he has been the one pulling the strings behind everything that had to do with the labyrinth, this is why he wanted a position of power such as the one as a headmaster. They all get upset for the betrayal and then Klaus arrests Willem for his actions. during this time, Willem doesn't deny any of his crimes nor he fights the arrest and he only seems to look at the floor always in complete silence.