On the run, Annika's father destroys his laboratory and all traces of his research. Meanwhile, Annika and Lux are embroiled in an anti-Citadel protest led by The Preacher.

On the run, Annika's father destroys his laboratory and all traces of his research. Meanwhile, Annika and Lux are embroiled in an anti-Citadel protest led by The Preacher.

Annika's investigation into her father's death brings her face to face with The Preacher and what she discovers changes everything.

Annika's fate rests in the hands of her closest allies as her confrontation with Aslin Kane reveals some deeply buried secrets.