Victory comes at a price.

Mare Barrow learned this all too well when Cal's betrayal nearly destroyed her. Now, with her heart hardened and her resolve unshaken, she is determined to secure freedom for Reds and newbloods like her. Her mission: overthrow the kingdom of Norta once and for all—starting with the crown on Maven's head.

But she cannot do it alone. To rise as one, Mare must ally with the boy who broke her heart to defeat the boy who almost broke her. Together with Cal's powerful Silver allies and the relentless Scarlet Guard, they form a formidable force against tyranny.

Yet, obsessed and unrelenting, Maven will stop at nothing to claim Mare as his own again—even if it means destroying everything and everyone in his path.

War is coming, and everything Mare has fought for hangs in the balance. Will victory be enough to topple the Silver kingdoms? Or will the little lightning girl be forever silenced?

In this epic conclusion, Mare must embrace her fate and summon all her power... For all will be tested, but not all will survive.