The listing, The Door In The Tree - William Corlett has ended.
Young adult novel, paperback, excellent condition. This is the second book in the Magician's House Quartet, but it reads well as a stand-alone novel, too. From the reverse: "Thirteen-year -old William Constant, and his two younger sisters, Mary and Alice, have come to the ancient, mysterious Golden House in Wales for the holidays. Their lives will never be the same once they enter the Magician's House - and discover their destiny."