Description of this Book Katie leaves her dollhouse in the backyard overnight and four fairies move in. The fairies are wonderful friends, and they need Katie's help to complete an important task. These final two installments in the Fairy House series feature real silky petal skirts on the covers. Illustrations.Description of this Book Katie leaves her dollhouse in the backyard overnight and four fairies move in. The fairies are wonderful friends, and they need Katie's help to complete an important task. These final two installments in the Fairy House series feature real silky petal skirts on the covers. Illustrations.