Lili and the mystery in Paris

Lili is a big lover of mysteries and is about to leave for Paris to a new school run by her aunt Agatha. But everything goes wrong when the aunt is accused of stealing an expensive brooch from a Parisian jewelry store. Fortunately, Lili has a great friend, Kája, and, most importantly, perfect observation and detective talent. And there' s a suspicious lady hanging around in a hat with a peacock feather.
Will Lili be able to solve the Parisian mystery?