A PUZZLE FOR THE SECRET SEVEN BY AMY

This book is suitable for ages 8 up.
The setting of this book is at a carnival and then on a hill.
The local carnival was on and the Secret Seven went.  On the way back they saw a fire.  At the carnival they got some gingerbread from a lady and it was her house that was on fire.  Her husband stole a violin and gave it to his son.  The Secret Seven found out and helped them pay for it.
The main characters are Colin,George, Janet,Barbara and Peter.
My chosen character is Janet because she is really cool.
I chose this book because I have never read the Secret Seven.