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The Secret Key (Agatha Oddly, Book 1)

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The Secret Key (Agatha Oddly, Book 1) by Lena Jones

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By Lena Jones

avg rating

89 reviews

Meet thirteen-year-old Agatha Oddly – a bold, determined heroine, and the star of a stylish new detective series.

Agatha Oddlow has been a detective for as long as she can remember – she’s just been waiting for her first big case. And nothing gets bigger than saving the City of London from some strange goings-on. With a scholarship to the prestigious St Regis School, a cottage in the middle of Hyde Park, a room full of beloved sleuthing novels, and a secret key that gives her access to a whole hidden side of London, Agatha is perfectly poised to solve the mystery of what’s going on. But just who can she trust when no one is quite who they seem…

Reviews

03 Mar 2025

This book was great ! I was so good that i couldn't even bring myself to put it down. My favourite person in this book was Agatha because i really like the way she thinks. It really interested my because the author uses really interesting words, but mainly because its like a detectives book and i love detectives book and spy books. I would recommend this book to any who likes or loves spy books.This is defiantly a 5 out of 5.

07 Aug 2024

Loved it!
Love detective story’s!
Good read!

22 Jul 2024

Agatha is a detective and rule breaker. I think you would like this book if you enjoy mysteries. It was so good that I went on to read the follow up books.

16 Jul 2024

Agatha oddlow has always loved mysteries, so when London is in a crisis, Agatha sets out to solve the mystery. The people who love Robin Steven's murder mystery books, this is for you.

21 Jan 2024

Agatha Oddly (who is a fun wacky character) has been a detective since as long as she can remember. Though nothing truly exciting happens in her little town. Though one day that all changes...

I would recommend this book to any reader who loves an adventure story that makes you sit at the edge of your seat, a story that makes you feel like your there in the moment and a place where nothing is too odd for the on the only... Agatha Oddly.

SO IF YOU TRULY ARE WISE, READ IT!!!!!!!!!!

03 Jan 2024

I love this book! l love mystery and this takes it to the next level. The best book ever.

02 Dec 2023

It’s all about detectives

31 Aug 2023

Brilliant and funny

30 Aug 2023

Gripping

23 Aug 2023

I liked Agatha because she is always determined to find clues and to solve the mystery.

10 Aug 2023

It was a really good book to reward and was really suspencefull.

02 Aug 2023

I loved this book because it's got a few super exciting
and intriguing adventures. It's got lots of mystery's
which make me want to just keep reading and never
stop. I would definitely recommend this book to
other children who love reading, puzzles, excitement
and mystery solving.

02 Aug 2023

I loved this book. It was my first time reading an Agatha Oddly and I really enjoyed it. The fact that they live in Hyde Park has really inspired me with my lego and general creativity😁🧱🤔🖌. I would recommend it to anyone who likes mystery, friendship and adventure.

02 Aug 2023

mysterious intreging and fun

27 Jul 2023

The Secret Key follows the ambition of Agatha Oddly; a thirteen year old girl who loves solving mysteries;she has even started a Detective Agency with her best friend,Liam-but her big break comes when she sees on old woman run down by a biker-and finds a tattoo of a key on her arm.Soon London discovers that their water supply has been contaminated and that sets her,and she brings along her best friend,Liam,on her adventure.The moral of this story is that family is not just because of blood it is because of support and faith in each other.

30 Jan 2023

I really enjoyed this book as it was action packed and the book really hooks the reader.My favourite character is Agatha because she doesn’t have much money or friends but she still seems to be happy.I would definitely recommend this book.

07 Sep 2022

Really interesting and gripping book, jam packed with adventure and a cliff hanger in almost every chapter.

25 Aug 2022

The first in a series of detective stories. References to Agatha Christie and Poirot. An enjoyable story for older KS2/3 readers.

24 Aug 2022

This is a brilliant book to read because my favourite character was Liam because he is always trying to look after Agatha. He is a great friend. This book is fiction because there is something called the Gatekeepers Guild which isn’t actually real. I would recommend this book to people who like mystery and detective books.

18 Aug 2022

My favorite character was Agatha.
I love that Agatha keeps breaking in and out of places.
I would 100% recommend this book.

10 Aug 2022

It was very mysterious and I was intrigued to read the next bit of the book. It is fun and adventurous and it is all about a girl named Agatha Oddlow and she has a friend called Liam Lau and they go on adventures to solve the mystery.

06 Aug 2022

I thought it was a very good book because had lots of mystery and problem solving.
I thought Agatha was very cleaver and Oliver the cat at the end was very cheeky because he started scratching Agatha’s trousers.
I like Agatha the most because she was very cleaver.
I would recommend this book to anyone that likes detective and mystery books

06 Aug 2022

I did not like this book because it was so scary. It gave me nightmares. The only thing I liked about this book was the mystery.

30 Jul 2022

I love that it was fiction and it was dramatic and that was the best book I ever read.

29 Jul 2022

This book is amazing! I recommend it for people 7+ because some of the words are quite hard and if you were listening to someone else read it the some of the scenes might be a little scary.

My favourite character was probably Agatha Oddly herself but I also quite liked the other characters too.

This book is the best ever!

29 Jul 2022

I loved this book because it was like a fantastic mystery and I love mystery books. Liam was my favourite charter.

I recommend this book to anyone who is over the age of 7+ because on some parts it might scare them.

This book is my favourite book of all times too!

23 Jul 2022

I feel great about this book. A nice read very unravelling. I do recommend it to anyone.

21 Jul 2022

I enjoy detective and murder mystery books, this one didn’t disappoint. Good read!

30 Jun 2022

My fav book. Amazing I wanna reread it all over again. 10000/10!!!

08 May 2022

I really liked this book. My favourite person would probably be Liam. I would definitely recommend it!

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