The grumpiest fish on the pond plays and April Fool joke – but is it funny?

Katie is growing up. She feels she is too old for an Easter Egg hunt. She is delighted when, over the holidays, Paul invites her to the cinema. She has some magic chocolate for him – but it does not work quite as expected.

A nasty tummy bug is going around the school. When Katie falls ill, she has words with a virus and gives it a piece of her mind.

All sorts of horrid rumours are flying round the school about Katie. They say she was responsible for the not-very-nice thing that happened to the new school swimming pool. It is almost like a witch hunt.

It is soon to be Beatrice’s Birthday and she asks him to go on an impossible quest, to find her a living dinosaur as a pet.

Katie the Witch takes part in a play on the fringe of the Edinburgh Festival and comes up against actors’ superstitions about Shakespeare’s Macbeth

Astropup has become a university professor. The Parrot is peeved that he cannot get an academic post. But then he meets some students and starts leaking top secret information to the world

Katie swaps identities with her cat Solomon – and soon realises that she has done a silly and dangerous thing.

Katie is stuck inside the form of her cat, Solomon. She goes to school and is shocked by all the trouble Solomon is causing inside her identity. She also overhears a plot to besmirch her best friend Isis.

When Jack starts to cut eyes and a mouth into his pumpkin, he is in for a big Halloween surprise.