Jams is homeschooled by his eccentric father while his mother works. He has no friends. One day their neighbours arrive with a monkey and ask, 'Will you look after our hamster?' They run away, abandoning Thimble. Jams and his Mum love Thimble instantly, but Jams' father doesn't like someone upsetting his routine. A series of wild comic adventures, at hospital, at school, at the zoo and camping, where Jams's father takes on Thimble and comes off the worse. Thimble is very clever and very naughty - and just the best friend Jams has been waiting for.

Jon Blake's first story was published in 1984; since then he has earned his living as a writer of books, plays and graphic novels, and as a teacher of creative writing. Previous books include You're a Hero Daley B (worldwide sales of 118,000+) and Stinky Fingers' House of Fun.