It is about an 11-year-old girl, Friday, who uses her detecting skills to solve mysteries at her boarding school.

A review in Kirkus Reviews of Friday Barnes wrote "Spratt begins this new series with a nifty, engaging protagonist who can keep readers laughing and help young geeks feel good about themselves.

[2] Common Sense Media and Booklist (that gave a star review) were both complimentary.

[3][4] Friday Barnes has also been reviewed by Publishers Weekly (star review),[5] BookPage,[6] The Bulletin of the Center for Children's Books,[7] Australian Literacy Educators' Association,[8] School Library Journal,[9] Horn Book Guide Reviews,[10] and School Library Connection.

[11] Entertainment Weekly in its 2016 list of best middle-grade books gave Friday Barnes an honorable mention.