School days at St Clare's are always full of adventures for the twin sisters Pat and Isabel O'Sullivan in Enid Blyton's beloved boarding school series. In the fourth book, the twins advance to the second form. New students, Gladys and Mirabel, have great talents in acting and music, while Elsie, the disgruntled head of the form, learns to become less spiteful. More mischief is expected at St Clare's!

Between 1941 and 1946, Enid Blyton wrote six novels set at St Clare's. This edition contains the original text and is without illustrations.