Happy Birthday, Oliver Moon & Oliver Moon and the Spider Spell (Unabridged)

Happy Birthday, Oliver Moon
Oliver Moon wants to have the best birthday bash ever, but some of his guest have other ideas. All of the not-so-nice wizards and witches from school have turned up and they are making real trouble. Luckily, there's birthday magic and hidden surprises in store.
The Spider Spell
Oliver's mum has caught green flu, so Oliver is in charge of the housework. There's a lot to do - recharging the wands, washing the cloaks and looking after the Witch Baby and her pet spider. And when Oliver tries a Grow-bigger spell on the cauldron, he finds himself in BIG trouble.