Friday Barnes, Under Suspicion is a 2015 Children's novel by R. A. Spratt.

It is the second book in the Friday Barnes book series and continues the adventures of Friday, a boarding school girl, who solves mysteries.

A review of Friday Barnes, Under Suspicion in Kirkus Reviews wrote "Spratt continues to hit just the right mix of dry humor and suspense.".

[1] In a similar vein, Booklist liked its humour and unusual mysteries.

[2] Friday Barnes, Under Suspicion has also been reviewed by School Library Journal,[3] and Horn Book Guide Reviews,[4] It won the 2016 Davit Award for Best Children's Crime Novel.