I know that the Bily Stuart series is quite popular so I decided to have a look... and it wasn't satisfying. The style made me think of the «Savais-tu?» series or the Jeronimo Stilton series, by the way it mixed children novels, illustrated novels, comic book, and the way it put emphasis on some word by the characters or their colors. For me it was really the characters, the story and the humor style that didn't get to me at all. If some kids loved it and that series made them read that alright, but I would recommend it!