This book was another book from the Enid Blyton collection. like I said in the book before it was AMAZING and interesting to read.
This book had some different feelings.

My favourite bit was when they were doing a challenge to find fatty because it was interesting.
Then the most interesting part was when Fatty discovered the mystery because it was at the same time as so many other interesting parts .

Then I found the weirdest bit of the entire book.

it was not exactly a bit of explanation in the book but it was when MR. Goon had discovered the mystery before them !
I really recommend this book to you and you should really be looking forward to find the whole Mystery pack.