The series explores the dynamic between institutional power and individual resistance, showing how Paige's personal struggle against oppression evolves into a larger movement for societal change. The narrative delves deep into the costs and consequences of standing up against established authority.

Throughout the series, characters grapple with their identities as "unnaturals" in a world that seeks to eliminate them. The theme examines how individuals maintain their sense of self while adapting to survive in a hostile environment.

The books masterfully weave complex relationships where the lines between ally and enemy become increasingly blurred, forcing characters to make difficult choices about whom to trust in a world where loyalty can mean the difference between life and death.