How does the author use foreshadowing in The Promise?

The Promise is divided into three books, each of which mark out a major stage in both Reuven and Michael's conflicts, which appear to mirror one another. In Book One, both characters (along with all the others) are introduced. As these conflicts are revealed, the book's ending is foreshadowed.... Reuven finds himself trapped between two worlds, and Michael enters treatment at Danny's mental facility.