It was first published in 1996 as Horrid Henry and the Tooth Fairy and was written by Francesca Simon and illustrated by Tony Ross.

Henry's "hard work" comes to a waste when none of his teeth feel wobbly and worse, his mouth, gums and stomach hurt.

Henry asks his mother how the tooth fairy knows whose pillow to put money and she says that she looks at the gap between the child's teeth.

Henry realizes his mistake and places a piece of black paper over his mouth.

The next morning, Henry receives a fake 50p coin and a letter from the tooth fairy, mocking him for his trick.

[1] Horrid Henry's cousin, Prissy Polly, is marrying Pimply Paul.

At bedtime, Margaret booby traps Henry's bed and stresses his parents by complaining.

In the morning, Margaret blasts everyone out of bed with the noise from her trumpet, screams at the top of her voice to Mum and forces her to make breakfast for her.

But when Henry makes him believe that Peter has fallen to his death out of an upstairs window, Mr. Nerdon faints and gets taken away in an ambulance.

Henry however isn’t bothered about the fact that the even more notorious teacher (towards students) Miss Battle-Axe will be teach his class from then on.