I Know What You Did Last Summer by Louis Duncan is a really great book. It is really interesting and entertaining, and the more I read, the more intrigued I became. The book is a thriller about 4 high-school aged kids, 2 girls and 2 boys, being hunted down by a killer seeking revenge. The killer is seeking revenge on these 4 kids because they accidentally killed little kid biking in the dark. The book starts off with an introduction of the characters, and then as the story goes on, they get more complex as they start hiding things from each other. Read this book if you are interesting in a suspenseful story!