How does the author use foreshadowing in The Possessed?

In Chapter Two, we see a side of Nicholas that may be foreshadowing brutality or inhumanity that is to come later. Although we are told that Nicholas was suffering from a fever when he committed his acts, there is some indication from the comments of Virginsky that the acts may have been completely in character for Nicholas. Towards the end of the chapter, the news of Verkhovensky's son returning strikes an ominous note and the symbolism of the disposed son returning likely indicates future turmoil.