When Charlotte and Anneliese Muller arrive at the Chalet School, their fellow pupils are puzzled by their behaviour. Why does Charlotte go and hide when she could be skating with her friends on the frozen Tiernsee? What makes Anneliese so scathing about her clever sister's abilities? As they struggle to find their feet in their new school, both girls have lessons to learn and fresh ideas to assimilate. Helped by talks with Joey Bettany and Miss Annersley, the Acting Head of the School, they gradually change their ideas, learning to be there for one another as sisters should, and by the end of term are beginning to feel they are truly twins. A 'fill-in' novel in Elinor M. Brent-Dyer's Chalet School series.