Biddy is excited when she spots a real-life Princess Tower from the window of the train. So is the invisible imp that lives in her hair - it is going to lead to all sorts of trouble!
Mum says the tower is a cathedral, but what do grown-ups know? When Biddy and the imp investigate further, they discover that Princess Rapunzel is trapped inside the tower.
Can Biddy save the day?
Ages 7+
