Warning! This article contains spoilers for Silo season 2 and Hugh Howey’s Wool.Silo season 2’s episode 2 brings one significant change to the Hugh Howey books, potentially deleting a major story from Juliette’s original arc. Despite being fairly loyal to its source material, Apple TV+’s Silo has not shied away from etching its own identity by introducing many original elements. For instance, Silo season 1 completely changes its source’s tone by unfolding as a mystery thriller instead of solely being driven by its sci-fi ideas. The first installment of the Apple TV+ sci-fi series also adds a few original characters to the mix while slightly changing the arcs of familiar ones.

https://screenrant.com/silo-season-2-juliette-lukas-shadow-book-change-explainer/