Mark Sperring worked as a printer before becoming a bookseller, and later becoming a children's book author. Mark is the author of The Shape of My Heart, Snappy Birthday, Dino Mummy, Dino Baby, Dino Daddy, Four Silly Skeletons, I'll Love You Always (Bloomsbury), Captain Buckleboots on the Naughty Step (Puffin) and The Sunflower Sword (Andersen). He lives in Bristol.David Tazzyman is the bestselling illustrator of the Mr Gum books (Egmont) which have won a multitude of awards, including the Roald Dahl Funny Prize. David grew up in Leicester and studied Illustration at Manchester Metropolitan University. The Naughty, Naughty Baddies is his third picture book for Bloomsbury, following the success of You Can't Take an Elephant on a Bus and The Truth According to Arthur. He has also illustrated the latest collection of Michael Rosen's poetry for children: Jelly Boots, Smelly Boots. He lives in Leicestershire with his partner and their three children.

Meet the Naughty, Naughty Baddies. They are wickedly wicked, awfully awful and they have a dastardly plan ... A fiendishly funny picture book by two terrific talents: Mark Mwah-ha-ha Sperring and David Diabolical Tazzyman

David Tazzyman's first picture book for Bloomsbury, You Can't Take an Elephant on the Bus, has sold over 42k copies in 14 months

Once there were four Naughty, Naughty Baddies. And each one was as naughty as the next. They liked nothing more than being diabolically dreadful. But best of all, they loved creeping ... When Four suggests a cunning plan to STEAL all the spots off the Queen's Little Doggy Woof-Woof, they all grin fiendishly and chuckle evilly as they creep, creep, creep ...WHAT will the Queen do when she sees her spotless Little Doggy Woof-Woof? WHERE is the King sitting as they creep, creep past? (Clue: a throne of sorts.)WILL the Naughty, Naughty Baddies get away with it?A very funny, deliciously naughty story that will have children and adults alike laughing with glee. From the bestselling pen of Mark Sperring and the bestselling brush of David Tazzyman.