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One day Billie and Jack find a note hidden under a rock at school. It seems to be written in code! It’s time the two friends put their code-breaking skills to the test.

52 pages, Kindle Edition

First published November 1, 2013

14 people are currently reading
117 people want to read

About the author

Sally Rippin

784 books223 followers
Sally Rippin was born in Darwin, but grew up mainly in South-East Asia. As a young adult she lived in China for three years, studying traditional Chinese painting. Sally has over seventy books published, many of them award-winning, including two novels for young adults. Her most recent work includes the highly acclaimed children’s novel Angel Creek and the popular Billie B Brown books, which became the highest selling series for 6-8 year olds in Australia within the first year of their release. Sally is Australia’s highest selling female author and her Billie B Brown books have sold more than 4.5 million copies in 14 languages.

Sally is a popular presenter in schools and at literary festivals both in Australia and overseas and has a regular program on 3RRR interviewing children’s authors and industry professionals. She is a passionate ambassador for the 100 Story Building creative writing centre for marginalized youth and has mentored many emerging writers and illustrators. Recently, she and her partner co-founded Story Peddlers, a hand-made performance tent that packs away into a custom-built bike, with the aim of bringing back the art of the roving storyteller.

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5 stars
121 (50%)
4 stars
71 (29%)
3 stars
37 (15%)
2 stars
8 (3%)
1 star
5 (2%)
Displaying 1 - 27 of 27 reviews
Profile Image for Leslie.
265 reviews
August 25, 2023
What a really cute series of books. Secret Clubs. Clues. Lots of fun for my grandson and me. 💜💜💜
Profile Image for Nichole Ostrander.
328 reviews2 followers
May 25, 2024
This book was not as great as the first but just as cute. It starts right where the first leaves us. Billie and Jack are on her front step with note. This note leads them to their mystery. Billie deals with jealousy, and self doubt though out this story, but Jack is there for her every step. Her friends love her and she grows though out. As the last book ended with a to be continued so does this one.! On to the next.
171 reviews
June 4, 2017
her emotions were very real and I loved that her best friend Jack since was a toddler was by her side even in her darkest moments...her knew her best and told her straight up and gave her friendly advice
21 reviews
January 24, 2023
Billie and the Secret Mystery Club (SMC) have found their first mystery! Each member of the SMC gets a note to solve. Billie is the last one to get a note and feels left out. But she shouldn’t worry because her note is the most important one. Can she and the SMC crack the code?
Profile Image for Helena.
97 reviews
July 18, 2017
Peruskivaa etsiväkerhopuuhailua, jossa ei ole jännityksen häivääkään. Isoa fonttia, suhteellisen yksinkaista kieltä. Sopinee lapsille, jotka tykkäävät lukea mukavia kirjoja mukavista asioista.
Profile Image for Nikki Flynn.
390 reviews17 followers
July 14, 2020
Also read this one to my little cousin and it was super cute and really fun!
Profile Image for Rachel.
54 reviews1 follower
September 28, 2020
I got this series for my 7-year-old daughter and she loves them! The reading level is perfect for her and we take turns reading chapters. Great books to get your kid reading!
Profile Image for Stefanie McKeown.
5 reviews
July 30, 2021
Fabulous to read-out-loud to my 5 year old. The codes were fun to re-create at home and my daughter was very engaged.
Profile Image for Jill Smith.
Author 6 books61 followers
January 7, 2022
Another tale of friendship and discovering talents within Billie B's club. Full review shortly.
Profile Image for Vinkkitonttu.
68 reviews3 followers
January 17, 2017
Erittäin sopiva kirja etenkin n. 7 -vuotiaille, mutta kelpaisi varmaan 9-10 -vuotiaille vielä lukemaan opettelevillekin... salakielet kun on kivoja ja arvoitusta ei ihan heti arvaa, vaikka pystyykin arvaamaan.
Profile Image for Anu-vinkkari.
1,425 reviews34 followers
February 7, 2017
Neljän kaveruksen perustama mysteerikerho selvittelee tällä kertaa outojen, salakielisten lappujen arvoitusta. Kun tuittupäisen Billien kaverit tuntuvat jatkuvasti olevan askelen Billien edellä, iskee kateuden peikko. Asiat saadaan sovittua ja koodiarvoitus ratkeaa yhteistyöllä, jokaista tarvitaan. Kirjan lopussa vielä koukkuna vihje seuraavasta arvoituksesta.
Profile Image for Katt Hansen.
3,844 reviews108 followers
December 5, 2015
This was a delight! Going from the really easy to read Billie B books into the Billie B Mysteries, it's nice to see her grow up a little, and get more mature. At the same time the reading level gets just a little bit harder. This is the perfect series to really grow with.

Loved the different types of code, but loved even more how the author tackles some very real emotions. Sailly Rippin has a good idea of what it's like to not only be that age, but what you feel at that age, and conveys the story perfectly in a way that's never dull to read. Great book! Can't wait to find the next one. :)
5 reviews
June 11, 2015
You are the most talented writer ever! I must say.
You make me enjoy your books so much. They are so cool when I start reading I don't want to put it down I have read all of your books and I love billie B brown so much I wish she was real. Mum says that I am getting to old to read the books because they are to easy for a 12 year old but I don't care they are the best books I have ever read. Could you please do another billie B brown in a older version around 12 years old please! I also read hey jack too. By the way my name is Kate Wylie from Dunedin ( Mosgiel) love your books heaps 100/10
69 reviews
October 14, 2014
This book was really fun! I liked that we could read the codes, so we could try and figure them out all by ourselves first!
Profile Image for Andy Hickman.
7,393 reviews51 followers
October 17, 2016
Sally Rippin, “Code Breaker: A Billie B Mystery”

Billie and her friends Jack, Mika and Alex follow a set of clues, each one figured out by each of the members of the Secret Mystery Club.
142 reviews25 followers
May 31, 2017
I WANT TO READ MORE IN THE SERIES !!!!!!!!!
Displaying 1 - 27 of 27 reviews

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