You don’t have to leave home to go on an exciting journey. It is enough to open the book, and you are already on the famous Baker Street, after a while - at King's Cross station, in real modern London, in the city where eleven-year-old Edie Winter lives. If Edie had been a little older, say she would have already turned thirteen, then this amazing story would not have happened to her. And all because no one over thirteen sees them... It all started when Edie found an inconspicuous wooden box on a subway seat and was surprised to discover that someone was living in it! Someone very tiny, about the size of a thimble...