It is spring and William, Mary and Alice Constant have returned to Golden House for the Easter holidays, anxious to see if the magic will work again. When they are drawn to the Magician's hideout, through a door in a tree, they learn that the secret to magic is believing; and through believing they can enter the magic and continue their great task.

The Door in the Tree 2010, Simon Pulse, New York

ISBN-13: 9781442414143

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The Door in the Tree (the Magician's House, Book 2) 2005, Red Fox

ISBN-13: 9780099482222

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The Door in the Tree 2000, Simon Pulse, New York, NY

ISBN-13: 9780743410021

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Door in the Tree 1992, Random House (UK)

ISBN-13: 9780099973904

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Door in the Tree 1992, Random House (UK), London, England

ISBN-13: 9780370315324

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