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The Chamber of Crowe
also known as The Chamber of Mysteries is a magical chamber where the Magical Line of Crowe keep their spell books, potions and equipment (also including a photo of Helen Clarke). It is disguised as a downstairs toilet at the Clarke household. In order to summon it the door must be knocked two times followed by the words

"Chamber of Crowe open to me, reveal yourself on the knock of three"

Then the door is to be knocked for a third time. The Chamber is guarded by the hobgoblin named Randal Moon. Benny once described it as Narnia Tim Burton-style.

The Chamber can move residents as it follows the blood line of Crowe. It has appear in the attic of Ursula's mother and then in her bedsit behind a Beatles poster.