The three-pronged scar behind the ear is a symbol of identity, conformity, and deception within the novel’s social hierarchy. For the cured population, the mark signifies allegiance to the state, representing a safe, emotionally sterile existence. For members of the resistance, however, a fake scar becomes an essential tool for infiltration and survival, a physical mask that conceals their true, “infected” nature. This function is central to Lena’s mission in the “Now” timeline, where her feigned identity as a cured person hinges on this small deception. She actively uses the scar as a strategic tool to navigate the controlled world of the city. During a tense meeting with her principal, Lena notes, “As I speak, I angle my head away slightly, so she can see the triangular scar just behind my left ear” (48). This deliberate gesture immediately softens the principal’s suspicion, illustrating how a visible marker of state control can be used to gain trust within the system. The procedural scar thus embodies Lena’s fractured self—the uncured woman hiding beneath the emblem of her enemy—and shows how deception becomes necessary for survival within this system.