The Secret of Platform 13

One platform in one of London's busiest stations is an old doorway covered with peeling posters. No one walking by (if anyone did) would guess that it
is the entrance to a magical kingdom — an island where humans live happily with mermaids, ogres, feys, and wonderful creatures called mistmakers.
Carefully hidden from the world, the Island is accessible only when the door opens for nine days every nine years. A lot can go wrong in nine days.
When the beastly Mrs. Trottle kidnaps the prince of the Island, it's up to a strange band of rescuers to save him. But can an ogre, a hag, a wizard, and a fey troop around London unnoticed? And what if the prince doesn't want to go back?
In a plot thick with mayhem, mixups, and magic, there is something to please readers of all ages. Fantasy lovers in particular will not want to miss this peek through the door under Platform 13 into the imagination of a deliciously clever writer.