Secret of Platform 13

Under Platform 13 of Kings Cross station there is a gump. A gump is a hidden door that leads to another world, and this one opens for exactly nine days every nine years. Beyond it lies a magical island - home to mermaids, wizards, trolls, brollachans, ghosts, hags, giants, mistmakers, and other wonderful creatures. Horribly funny, brilliantly inventive - Eva Ibbotson's fantastic supernatural adventures are in a class of their own.