When Jamie's mysterious art teacher sends him to the old Maskmaker's shop, he is faced with a terrible decision.

He must choose a disguise that will take him into mortal danger, with only a taking cat to help him.

In the deserts of Africa, the frozen glaciers of Greenland, and the Great Wall of China, Jamie will need all his intelligence and courage if he is to save his friends and fmily.

Will the perilous tasks he faces help him solve the strange problems in his own life? Or will a dark web of sorcery stop him from ever coming home again. 'Extremely well written, highly inventive and with really funny jokes' - Eva Ibbotson.