Seventeen-year-old Ginny is sent to Europe with nothing but a backpack and a pile of envelopes. Inside those envelopes are her travel itinerary and tasks set before her by her now-deceased Aunt Peg. She has to open the envelopes in order, and can't open the next one until she's completed the previous task. Her envelopes take her from London to Edinburgh to Rome to Paris, and she makes several new and eclectic friends along the way, a rarity for the normally shy teenager. Her observations of the European sites are exciting both for readers who've seen them and those who haven't, and Ginny learns as much about her free-spirited aunt through her jouneys as she does about herself. Heart-warming and adventurous, funny and realistic (despite the unusual circumstances), 13 Little Blue Envelopes is a great read.