'Amy and the Secret Club of Supergirls' is the first book in a series by Polish writer Agnieszka Melech about an inquisitive six-year-old who adores secrets. Amy and her friends founded the Secret Club of Supergirls for preschool training. What kind of a mysterious thing can happen in the lives of preschoolers? Are the strange people at the airport that suspicious that the girls have to spy on them even in the opera house? The Secret Club is just hunting for secrets, and if there aren't any, the girls invent them themselves.