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Aria & Liam and The Baker Street Mystery

A school trip to the Sherlock Holmes Museum ends with Aria and Liam transported to 1902, straight into Sir Arthur Conan Doyle's home. His daughter, Mary, has just received a warning that someone plans to harm her father. Aria and Liam know exactly how this ends. In their timeline, the famous author vanishes and is never found. Now they have a chance to rewrite history.

With the help of Mary and Peter, the local milkboy, Aria and Liam begin searching for answers. Doyle announces the return of Sherlock Holmes, while Aria and Liam discover he has received blackmailed letters.

Before they can discover who is responsible, Doyle vanishes.
All the clues suggest that someone close to Doyle is involved, but which of their theories can they trust? Could a rival author be acting out of jealousy? Are the Freemasons protecting a dangerous secret? Do powerful members of high society want Doyle silenced?

To bring Sir Arthur Conan Doyle home and rewrite history, Aria and Liam must learn to think like Sherlock Holmes himself.

Aria & Liam is a series of standalone middle-grade books. Young readers can enjoy each adventure in any order they wish.

Book information:

  • ISBN (paperback): 978-1-959814-29-0
  • ISBN (ebook): 978-1-959814-21-4

Find the book at your favorite retailer by clicking the link below.

I want to find it!

❝This adventure was mind-blowing! I got to meet one of my favorite authors of all time. How cool is that? I have dyslexia, so I used to think becoming an author probably wasn’t possible for me. After this adventure, I don’t feel that way anymore. I realized that being different can make some things harder, but it can also be a strength. I just have to work on the things I struggle with and keep building on what I’m good at.❞

Aria

❝I never really understood why Aria liked Sir Arthur Conan Doyle so much. I thought he was just the guy who created Sherlock Holmes. But then I learned that his stories helped advance forensic science and changed how the police investigated crimes. Before, I thought only politicians, kings, or soldiers could change the world. Now I know you can make a big difference in all kinds of jobs.❞

Liam

Meet the characters

  • Aria

  • Liam

  • Mary Doyle

  • Peter

  • Sir Arthur Conan Doyle

  • Louisa Doyle

  • Sir William Montgomery

  • Dr. Watson

  • Baroness Emma Orczy

❝One reason I wrote this book is to
show that everyone’s work can shape the world in ways we may not expect. Sir Arthur Conan Doyle was an author, yet his work helped drive major advances in forensic science and in the use of evidence to fight crime.

It was also important to me that Aria reveal that she has dyslexia. I am neurodivergent myself, and I have never understood why neurodivergence is only seen as a disability. It brings real challenges, but it also comes with valuable strengths. I believe we are all dealt a different hand in life, with some cards easier to play than others.
What matters is learning to work on the things we struggle with, develop our
strengths, and use both to grow and thrive.❞

Coline Monsarrat

Meet the team

  • Coline Monsarrat, the author

    Coline Monsarrat grew up believing books were gateways to magical realms where anything was possible. Her love of exploration and boundless curiosity shaped her belief that life is an adventure waiting to be written.

    Learn more 

  • Andrea and Michele, The Editor

    Thank you to Andrea and Michele at Two Birds Author for making this story better!

    Two Birds Author Website 

  • The Illustrators

    Thank you to Harsh, Ragini, Kaustavi, and Vanshika at Draftss for bringing the characters to life. You are all amazing!

    Draftss Website