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 seven, Eileen's mother is the new Matron and Mam'zelle's niece, Claudine, joins St Clare's and causes havoc wherever she goes. The twins are enchanted by rebellious Claudine and her mad-cap plans, but will she last the term? Expect more mischief at St Clare's!
