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Geronimo Stilton Special Editions #7

The Hunt for the 100th Key

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Geronimo unlocks the mystery in this fabumouse adventure -- which includes a bonus story!

My sister, Thea, had discovered an enormouse old castle built by the founder of New Mouse City! She and Trap dragged me along with them to explore it. Inside, we found one hundred keys... but only ninety-nine doors to unlock. What mysterious room did the hundredth key open? It was up to us to find it and reveal its secrets! BONUS! After the story, read an extra Mini Mystery adventure and jokes galore!

229 pages, Kindle Edition

Published March 28, 2017

207 people are currently reading
453 people want to read

About the author

Geronimo Stilton

1,996 books3,143 followers
A pseudonym of Elisabetta Dami, see also Tea Stilton.

Elisabetta Dami is an Italian author that currently resides in Italy. She is the author of the Geronimo Stilton series, a bestselling childrens book. She enjoys traveling the world seeking ideas for her series. She writes under a pseudonym of Geronimo Stilton. She is also a co-owner of Italian based publishing company Edizioni Piemme.

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Community Reviews

5 stars
462 (69%)
4 stars
120 (18%)
3 stars
56 (8%)
2 stars
19 (2%)
1 star
9 (1%)
Displaying 1 - 25 of 25 reviews
Profile Image for Vivaan.
70 reviews29 followers
September 29, 2020
This book is about a castle built by Grand gentle-mouse for his bride.so in this castle Geronimo is here to search for the bride name .They wanted the bride's name so they could tell it to the media and it would help trap t say something interesting in his show. I rated this book a stars because the whole ending was only about how and who loves her and it was so irritating and boring. My favourite character is Trap because he played so many prank on Geronimo and it went so crazy . I could do that on my sister but I know she will get me back good. My favourite part was when Geronimo got scared because of traps just made a shadow of a witch because felt it was funny but i also thought it was lame but then i realized that Geronimo is a scaredy mouse.
Profile Image for Leah Jane.
12 reviews
January 7, 2023
This was the best book for my two little girls. I really recommend it, I even read the book my self! Just for all of the moms/parents this is very kid friendly! They got it from their school book fair!
14 reviews
Read
September 21, 2020
a good read for the person who likes cheese.
1 review
Want to read
March 8, 2022
I am really interested in the book: The Hunt of The Hundredth key. I really like the story when there is a mystery for you to solve, it gives you excitements and make you wonder about the next thing that would happen. In my opinion, this book is good because it has a really clear plot and theme, it makes you feel all happy, interested, wondering, exited, and sometimes scared. But not all of the parts are clearly good, there are negative points, too. The bad point is that the story goes too fast, like, for example, someone did a really fantastic thing, and that is the point of the hole story, then, that person just go home. For me, it is too of a skipping-the-ending thing here. But mainly, it is a good story.
Profile Image for Lizzie  J.
305 reviews31 followers
May 26, 2018
Another classic Geronimo Stilton story. These ones are the best because, despite their obvious target for a younger audience, they can still be enjoyed by teenagers and adults. There's enough of a plot and conflict to keep older people entertained.

I wouldn't say that this is my favorite Geronimo that I've read, but it was pretty good. I liked the "mini" story better than the 1ooth key one. The mini story made me laugh.


Swearing: None

Sexual content: None

Violence: None

Religious/spiritual/magical content: None
322 reviews
November 12, 2022
My sister, Thea , had discovered an enormous old castle built by the founder of new mouse city! She and trap dragged me along with them to explore it. Inside, we found 100 keys but only $99 to unlock. What Mysterious Room did the 100th key open? It was up to us to find it and reveal its secrets! Geronimo and his sister and trap are exploring a mysterious old castle built by the founder of new mouse City!
Profile Image for Harish Suren.
14 reviews
August 7, 2018
Of course I would write a review for a Geronimo Stilton special edition book. Anyway, a five ⭐️ 📖. (Sorry.i like talking kind of in stickers).so,it’s the best book I’ve ever read in my whole week. So I am thankful that the Geronimo Stilton author was alive. I’m also thankful that he writes good 📚.
Profile Image for Hana.
97 reviews2 followers
September 28, 2019
This book is really interesting ‘cause Geronimo,Thea and Trap travel to a very old castle which was built by a mouse (a prince)named Grant Gentlemouse for his bride in the land of 🌹. Grant’s bride is named Rose Stilton. There are also very fun games in the book:-)!!!
This entire review has been hidden because of spoilers.
9 reviews
November 10, 2021
it was very fun to read and had a good back story, it was funny reading what happened to GS since he got so scared of the thunder and lightning that was happening,

He was so frustrated because he couldn't find the hundredth key.
Profile Image for Juju#Selfie.
9 reviews1 follower
September 7, 2017
this book was super awsome plus i bout it in the philipines
5 reviews
December 31, 2017
it was superb as there was 100 steps 100 doors 100 keys 100 rooms 100 stories
.
21 reviews
July 23, 2018
the adventure was the best parts of the book
1 review
December 6, 2018
the story has amazing story and clear explanation it's an adventure story.
This entire review has been hidden because of spoilers.
Profile Image for Raine Villanueva.
113 reviews14 followers
January 29, 2020
One night, Geronimo wasn't able to sleep because he's focusing on a new story for the hundredth day of school for kids, until he answered the phone from his sister, Thea that she's going to be on their cousin, Trap's show, Chasing Secrets on Mystery Mouse TV. In this episode, Thea talks about the mystery in New Mouse City about the hidden castle built by its founder, Grant Gentlemouse which is dedicated to his bride. Fortunately, she wants to bring Geronimo to a brand new adventure at the Castle of One Hundred Stories.

Geronimo, Thea and Trap are going to solve what mystery lies at the castle to discover who is Grant's bride.
Profile Image for Liz.
547 reviews5 followers
April 25, 2020
I got one history based story, a bonus mystery, and 4 pages of jokes. I loved everything about this book!
8 reviews1 follower
January 20, 2022
This book is really good and very amazing as it has riddles, jokes and many other things. My favourite part of this book is all about the Investigators of The Double Cross Story.
1 review
Read
September 27, 2023
It was a good book I like it because it is a novel and it has lots of pictures which helps a lot
104 reviews
August 31, 2020
I enjoyed that the characters were persistent and didn’t give up.
Displaying 1 - 25 of 25 reviews

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