Identical twins, Patricia and Isabel O'Sullivan, begin their secondary school education on a sour note. They want to attend Ringmere — a kind of Roedean clone where their good friend Frances has been enrolled but Mr ... Mrs O'Sullivan are under the impression their daughters have acquired a certain amount of snobbishness from the last school they attended (Redroofs) and have opted for St Clare's which they view as a Sensible establishment. The twins' decision regarding this outrageous deviation in their lives is that they will turn their noses up at anyone and everything and show the other girls that they are Somebodies — And Don't You Forget It!! After all they were head-girls at their old school and the decided opinion (Pat's admittedly) is that she and Isabel are good at nearly everything as well as being pretty and amusing. I find that statement pretty amusing because people who call themselves pretty and amusing are often ugly and boring. Fortunately for the O'Sullivan Twins, they are essentially success-driven which is a quality inherited, no doubt, from their Sensible parents.