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Mouseford Academy #2
The Missing Diary
Welcome to the world of the Thea Sisters!
The Thea Sisters and some friends decide to start a school newspaper. But when Colette's diary goes missing and sports reporter Nicky witnesses a suspicious finish during the Iron Mouse Games, the five mice have to put their reporting skills to work solving mysteries! Can the Thea Sisters come up with the answers and make their deadline for the paper too.
The Thea Sisters and some friends decide to start a school newspaper. But when Colette's diary goes missing and sports reporter Nicky witnesses a suspicious finish during the Iron Mouse Games, the five mice have to put their reporting skills to work solving mysteries! Can the Thea Sisters come up with the answers and make their deadline for the paper too.
113 pages, Mass Market Paperback
First published September 1, 2010
About the author
Thea Stilton
528 books1,020 followersSee also Tea Stilton, Τέα Στίλτον and Теа Стилтон.
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Displaying 1 - 30 of 44 reviews
February 18, 2016
Ruby was the best name for the red hair mouselet. :D
February 19, 2017
Bah, Vanilla. :| Wat een vreselijke trut is dat zeg. Kan ze gewoon niet eens een keer ophoepelen naar de hel waar zij toebehoord? Sorry hoor, maar echt die meid leert het niet, en ze krijgt amper straf. Sneu hoor.
February 3, 2019
My daughter started reading Thea Stilton's books when she was 7 (she is now 9!). She picked this book for her oral book report presentation at school. I read the book just to help her with her presentation! I quite enjoyed reading this book.
January 12, 2015
It was fun and exciting!
May 1, 2017
This one was good. It focused mainly on journalism. I admire the passion and truth told behind it. I admire the friendship of the girls. It was a good book. Fast and easy to read.
August 12, 2020
This is the second 📚 book of muoseford academy series. As i wrote a review on the first book drama at mouseford this book is the second in the series. It is also a fun book.Thea stilton bought us another fun version happy reading mouselets.
June 21, 2021
Aaah nostalgie! Had echt weer even zin om een Stilton boek te lezen.
May 16, 2018
Oh no! Coco's diary goes missing! It was stolen by someone who is taking all of her private thoughts out of context to create strife between the Thea Sisters. But as we know, as in any Stilton-verse book, it all works out in the end. The conclusion of this sophomore volume, in the series of Mouseford Academy, seems to be a little forced with everyone getting along and learning a lesson. But, on a plus, Thea does actually make a guest appearance.
Want to Read
April 20, 2020La historia era de que le robaban el diario a Colette. Si hay un plot twist que es no robar. Los personajes son, Colette es bonita, tiene el cabello amarillo, su color favorito es el rosa, y su ropa es rosa. Nicki le gusta las aventuras y su color favorito es verde y su cabello es rojo. Paulina tiene su cabello azul, su color favorito es naranja. Pamela es chistosa, su color favorito es rojo, y le gusta comer. Violet es penosa, su color favorito es morado y su cabello es azul. Vainilla tiene su cabello rojo y largo y le gusta tomar fotos. Representan amistad. El estilo del autor es Narrative Writing. El libro me enseñó a no robar. Le recomendaría este libro a mis primas porque creo que les gustaría los personajes.
June 4, 2019
It’s a Mouseford Mousetery!
The Missing Diary by Thea Stilton is the second book in the series. It is a fiction chapter book with some pictures that is good for both boys and girls ages six to ten years. My favorite part was when Paulina and Pamela find the rare and precious cave pearls. I think other kids would like it because it was exciting to see if Colette gets her diary back. Read this book—you will like it, especially if you have read and enjoyed the Geronimo Stilton series! Thea is Geronimo Stilton’s sister and the Thea Sisters are her students from Mouseford Academy. I can’t wait to read the next book in this series!
review by Dominic D., age 8, Tampa Bay Mensa
The Missing Diary by Thea Stilton is the second book in the series. It is a fiction chapter book with some pictures that is good for both boys and girls ages six to ten years. My favorite part was when Paulina and Pamela find the rare and precious cave pearls. I think other kids would like it because it was exciting to see if Colette gets her diary back. Read this book—you will like it, especially if you have read and enjoyed the Geronimo Stilton series! Thea is Geronimo Stilton’s sister and the Thea Sisters are her students from Mouseford Academy. I can’t wait to read the next book in this series!
review by Dominic D., age 8, Tampa Bay Mensa
March 15, 2025
encontrei por casa esta peza de literatura antigua e non puiden non lela, ten todo o que nos gustaba: letras bonitas e con formas graciosas que fan máis sinxela a lectura, debuxos con cores moi vivas e un gran salseo de por medio que se resolve e sempre gaña o lado bo, como resistirse!!!! que recordos máis bonitos, se estades tristes recomendovos reconectar co voso eu interior através da lectura máis inocente que atopedes
May 10, 2022
Deciding to read my childhood book series is the best decision I'm making in my life so far. It comforts me and warms my heart in so many ways that other books can't.
This book is an amazing book to read to your younger children or to read for yourself if you just need an escape from this big terrifying overwhelming world
This book is an amazing book to read to your younger children or to read for yourself if you just need an escape from this big terrifying overwhelming world
July 26, 2022
Like I’ve said before, I’m currently just reading some old favorites in my mother tongue. I’m doing this for a multitude of reasons, the main being that I really need a mental health break. But I’ll admit, these books aren’t bad. At least I enjoy them. Sooo here we go. Now I just have to figure out what to read next.
June 1, 2019
The Thea sisters need to find Colette’s missing diary. The sisters who are:Colette,Nicky,Paulina,Pamela and Violet go everywhere to find the dairy. My favorite part of this book is when... they find out that Ruby Flashy fur...STOLE THE DAIRY!!!
February 12, 2021
The Thea Sisters and their friends have decided to start a school newspaper. But then Colette's diary goes missing, and sports reporter Nicky witnesses a suspicious finish during the Iron Mouse Games. Can the Thea Sisters solve these mysteries and make their deadline for their paper?
January 4, 2024
Buen libro sobre apoyar siempre a las amigas, creer en sus talentos y buenas ideas y formar redes de apoyo sanas y seguras libres del juicio y de la competencia!!
Resumen más rápido aún: Club de Tea (+chicas majas del club de la lagartija) 1- Club de Vanilla 0
Resumen más rápido aún: Club de Tea (+chicas majas del club de la lagartija) 1- Club de Vanilla 0
September 24, 2025
es fuerte porque esto era lo que esperaba al entrar en la fcom…
ya que estamos dame toda la fantasía mean girls, no te quedes en lo superficial ni me metas cosas de deportes a caso va dirigido a hombres??? also vanilla no es tan villana como la quieren hacer quedar venga ya hombre
ya que estamos dame toda la fantasía mean girls, no te quedes en lo superficial ni me metas cosas de deportes a caso va dirigido a hombres??? also vanilla no es tan villana como la quieren hacer quedar venga ya hombre
November 19, 2025
What i like about this book is that they show off more the life of Colette, the pink character. Also the introduction of the new group of Vanilla de Vissen which is so cool to know about.
Interesting story!.
Interesting story!.
August 4, 2017
Ideaal voor de lagere-school-kinderen. Een spannend meisjesverhaal met herkenbare en minder herkenbare situaties.
December 20, 2019
delightful.
the students learn to work together on the school newspaper and also learn some very important lessons.
these little mice are growing on me.
the students learn to work together on the school newspaper and also learn some very important lessons.
these little mice are growing on me.
October 13, 2021
Thea is Great
Awesome loved it soooo much you need to try it out love love love it buy it now for me
Awesome loved it soooo much you need to try it out love love love it buy it now for me
October 16, 2022
Great book but recommended for children under 12 years
Read
December 23, 2022have been struck with the sudden and exigent urge to start writing an aesthetic diary
February 15, 2023
a five star book
July 25, 2023
good vibes brah!
May 12, 2024
Healing my inner child or whatever
November 10, 2024
1000 stars even from my 8 year old and 5 from my 6 year old.
November 24, 2025
Love it for those who like highschool vibes,drama,and mystery just love it
December 4, 2025
these books were my entire childhood. i love how wholesome this was, and it makes me so nostalgic reading thea stilton books <333
February 27, 2026
So many characters. My daughter liked the story though!
Displaying 1 - 30 of 44 reviews
























