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The Case of the Missing Library Book: The Anna & Ava Detective Agency, Book 1
Paperback
Series: The Anna & Ava Detective Agency, Book 1
Chapter BooksGeneral Juvenile Fiction
Publisher: Independently Published
Published: Feb 11 2026
Pages: 64
Weight: 0.19
Height: 0.15 Width: 5.50 Depth: 8.50
Language: English
When a beloved library book disappears, the entire class faces losing library privileges.
Most kids panic.
Some start blaming.
AnnaBelle starts making a list.
The checkout log says the book was returned. The shelves say it wasn't. And Anna does not like it when facts don't line up.
Her younger sister Ava notices something else entirely-the librarian isn't angry. She's worried.
Together, the sisters open their very first case.
As Anna builds timelines and Ava listens for what isn't being said, they discover that solving a mystery isn't just about finding what's missing. It's about understanding why it went missing in the first place.
Warm, thoughtful, and grounded in real-life school moments, The Case of the Missing Library Book is a heartfelt mystery for readers ages 7-12 who believe that courage sometimes looks like telling the truth.
The Anna & Ava Detective Agency is officially open.
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