Francesca Simon books in order
24 books in the catalogue, about 41 hours of reading in all; the shortest takes 1 hour and the longest 2 hours.
1 series and 14 standalone books in the catalogue.
Horrid Henry
18 books
Horrid Henry 1.8 h Horrid Henry and the Secret Club length not known
Horrid Henry Tricks the Tooth Fairy 2.1 h 
Horrid Henry's Nits 1.7 h 
Horrid Henry Gets Rich Quick 1.6 h 
Horrid Henry's Haunted House 1.6 h 
Horrid Henry's Revenge 1.8 h Horrid Henry and the Bogey Babysitter length not known
Horrid Henry's Stinkbomb length not known
Horrid Henry's Underpants length not known
Horrid Henry Meets the Queen 1.5 h Horrid Henry and the Mega-Mean Time Machine length not known
Horrid Henry and the Football Fiend 1.9 h Horrid Henry's Christmas Cracker length not known
Horrid Henry and the Abominable Snowman length not known
Horrid Henry Robs the Bank 1.9 h Horrid Henry Wakes the Dead length not known
Horrid Henry Rocks 1.6 h Standalone books
Horrid Henry and the Secret Club 1.8 h 
Horrid Henry and the Tooth Fairy 1.8 h 
Horrid Henry and the Bogey Babysitter 1.8 h 
Horrid Henry's Stinkbomb 1.7 h 
Horrid Henry's Underpants 1.7 h 
Horrid Henry and the Abominable Snowman 1.7 h 
Horrid Henrys Jolly Joke Book 1.6 h 
Horrid Henry Wakes The Dead 1.7 h 
Horrid Henrys Birthday Party 1.4 h 
Horrid Henrys Christmas 1.8 h 
Horrid Henrys Holiday 1.4 h 
Horrid Henrys Car Journey 1.4 h 
Horrid Henry's Nightmare 1.8 h 
Horrid Henry's Krazy Ketchup 1.8 h