Ibbotson, Eva.
THE SECRET OF PLATFORM 13
New York : Puffin, 1994
IL 5-8, RL 7.5
ISBN 0141302860

The Gump is a secret passage between The World and The Island.  It only opens once every nine years.  The last time it opened, the young prince was lost.  His nannies decided to take a short visit to the World.  While there, the baby was taken by Mrs. Trottle who wanted a baby for her own -- even if it means stealing one.  Now, nine years later, a group of rescuers leave the Island on a quest to return the prince to his home.  This unlikely troop -- an ogre, a hag, a wizard, and a fey will have to sneak around London unnoticed.  They learn that the baby was stolen by Mrs. Trottle and they find her and her son Raymond.  Raymond is a lazy, spoiled child.  The rescuers are shocked and the thought of him becoming their king is not making them happy.   But they have a job to do.  They meet a young boy named Ben who is a servant in the home and he helps them get to Raymond.  What will happen when the prince is returned to the Island?