The Detention Diaries: Worse than Jail

by Sam Copeland, illustrated by Dominic Trevett

Interest age: 7 to 11
Reading age: 8+

Published by Bloomsbury, 2026

  • Diaries and journals

About this book

Arthur Guppy is in detention along with an assortment of his classmates. Of course, this is a huge injustice, and Arthur is entirely innocent of whatever it is he is thought to be guilty of. 

But bad things have happened at school and somehow he and his best mate Carlos Chickens seem to be right in the middle of everything.  

It all started when the school axolotls, Wet Willy and Mad Maxolotl, were kidnapped – or did it? Perhaps it really began when Arthur shouted ‘BUMFLAPS’ at the top of his voice in the middle of a lesson. 

Actually, if you want the absolute truth, the whole story, you’ll have to read Arthur’s detention diary which will give you all the juicy details. 

Packed with doodles and black and white scribble-drawings, The Detention Diaries is a hilarious stream-of-consciousness thought experiment from the brain of a hyperactive eleven-year-old. 

Expect to meet Jimothy Jomlinson, the tough-guy leader of the Fooligans; to encounter confusion between a sidekick and a psychic; to learn some basic Spanish vocabulary and even to get a glimpse of Arthur’s holey underpants.  

Hold on to your hat – Arthur’s journey to detention is one you won’t forget in a hurry!

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