Meet Frankie Finkleton. Age 11 and one-twelfth, Frankie has a BIG secret! Well, lots of secrets, actually: 1. She has a brother called Fred who is the Best Invention Ever, and a baby sister called Flo who is her arch-nemesis. 2. She has a dog named Blue who has giant eyeballs and tiny nostrils. 3. Oh ... And she's a teensy-weensy, squinchy bit magic! Frankie has a world inside her head called Thoughtopolis â" you just go through the eyeball, right at the skull, past the brain stuff, and then second door on the right! It's great fun, full of weird-and-wonderful places and creatures, and together, she, Fred and Blue go on adventures. Until one day, Frankie gets trapped, and has to uncover a secret hidden deep within if she is to get back to the Real World. But when the truth changes everything, will Frankie want to go back? Help!