There are times when one novel you are reading leads you to a completely different novel, usually a classic of Western Literature. This is done most often through a specific plot development, discussion between characters, or even a mention of the book or author. It may be fleeting (as a mention of a book that influenced the character as a child) or as a key plot element (as is the case in most bibliomysteries). The eleven pairs of books below are examples of one book that leads you to another, either for the first time or the first time in a long time.