Schooldays at St Clare's are never dull for twins Pat and Isabel O'Sullivan in Enid Blyton's much-loved boarding school series.
In book three, Pat and Isabel look forward to their first summer term at St Clare's. They soon make friends with new girl Carlotta, who has a secret past that she's desperate to hide. But sneaky Prudence finds out and tells everybody. How will the class react?
There'll be mischief at St Clare's!