Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
When trouble strikes at Pleasantville Elementary, the Fourth Grade Detective Agency is on the case! Join Mia, Jose, Asha, and their clever classmates as they unravel twelve kid‑friendly mysteries - from missing cookies and swapped science projects to a spooky Halloween mix‑up with a surprising red herring.Each chapter is a new whodunit full of sneaky clues, smart thinking, and lessons about honesty, teamwork, and asking an adult for help. Perfect for young readers who love puzzles, practice in observation, and a little safe suspense. Can you solve the mystery before the detectives do?