Humphrey Carpenter

'I really am quite useless as a wizard', says Mr Majeika. But Class Three thinks Mr Majeika is an excellent wizard, particularly when his spells go wrong.

When the wizard-teacher defies the headmaster and uses magic to make Halloween more fun he is sacked. Wilhelmina Warlock is at the bottom of the trouble and must be defeated to rescue the children from boredom and Mr Majeika from his attempts at doing other jobs.