"As they shook hands for what would prove to be the last time, Falk found himself struggling to remember, once again, why they were still friends." (p. 185). In spite of their shared childhood, Luke and Falk had very different personalities. What is it that spells the end of their friendship? Do you think they would have remained friends if they hadn't lied about where they were at the time of Ellie's death, and/or if Luke had told Aaron where he really was in the first place?