A book or film review

I read a book called "El cas de la professora desapareguda".
It was an adventure story about four bois and a dog, called Charly, Estefi, Preciós, Ravanet, Fred and Senyor Koslowski.
In the story at the school the students have a bad behaviour and suddenly one day the teacher disappears.
The main characters start to look for her.
I liked it because Ilike adventure stories.