Shift alternates between present day and the bike trip. It is an extremely effective way to tell this story. It builds suspense, it gives us greater insight into both of the boy’s psyches, it builds the story inch by inch, and it allows us to fully experience the before and after.
As Chris retells the story of his road trip he has the advantage of time passing so that he can fully reflect on the experience, words spoken, glances given and tie events together to expose hidden motives in a way that slowly builds the reader’s understanding of what really went on.
As mysteries go it is a fairly quiet one. It is not a violently charged story. It is more about how pressures in our life can lead us down certain paths. It is about decisions, responsibility, and friendship. It is a story that will inspire its readers to take risks and go on an epic journey of their own.