What is the theme in The Story of Edgar Sawtelle: A Novel by David Wroblewski?

Fate is an important theme in the story. Since "The Story of Edgar Sawtelle" is an American retelling of "Hamlet," the idea of fate can be clearly seen in the novel if sought. Hamlet, determined to flee Denmark, nevertheless returns to the kingdom to confront his murderous uncle, as if his path was ever uncertain: injustice must be righted. So too in the "Story of Edgar Sawtelle" does Edgar leave his home (the family farm) and return there later in order to confront his murderous Uncle Claude in order to right an injustice.