This book follows Ginny (Virginia) as she follows her aunt's mysterious instructions, left in numbered envelopes, on an adventure across Europe. It's a great little idea for a story, but I don't think it was quite pulled off in this book, it often felt like a travel guide with bits of story squeezed in. As a Brit I found various flaws with the chapters set in London, just inaccuracies which stand out to someone familiar with British life. The library copy I borrowed was also littered with spelling mistakes of place names (Leister Square?) which a previous borrower of this book had actually gone through with a pen and corrected. I don't know if these were corrected in later editions. Despite all this, I did like it. I liked the main character of Ginny, and the sense of adventure, and there were some extremely touching moments throughout.