Empire of Storms — Throne of Glass, Book 5

Empire of Storms Review

Empire of Storms is the fifth book in the Throne of Glass series and the penultimate volume of the main storyline — with Tower of Dawn running parallel before the finale. By this point, Maas has constructed one of the most intricate fantasy worlds in contemporary young adult and adult crossover fiction, and this book is where the full scope becomes visible.

Aelin Galathynius is racing against time: she needs three keys to seal the Wyrdgate and prevent the Valg from completing their invasion. The quest takes her across the map — to Skull’s Bay, to Eyllwe, to the ruins of ancient civilisations — while Manon Blackbeak’s arc reaches a turning point that recontextualises her entire character journey.

What works: The mythology deepens in satisfying ways. The connection between the Throne of Glass world and the ACOTAR world becomes explicit here in a way that rewards readers of both series. The romance developments — long-simmering — pay off in ways that feel earned. Manon and the Thirteen Witches remain among Maas’s best creations.

What to expect: The pacing is demanding — this is a 700-page book with multiple major threads running simultaneously. The ending is genuinely shocking and lands with real emotional weight.

The cliffhanger: Empire of Storms ends on one of the most devastating cliffhangers in the series. Readers going in cold should know that Tower of Dawn is not a sequel but a parallel volume, and both should be read before A Kingdom of Ash.

Verdict: Essential for series fans. The world has grown too large and too intricate for casual readers, but for those committed, this is Maas operating at full capacity.

Reading Guides

• Sarah J. Maas Books in Order: Complete Reading Guide for All Three Series (2026)

What Distinguishes This Book

Among the qualities that set Empire of Storms apart: The world-building reaches its apex — the full scope of the Throne of Glass universe becomes visible here; Manon Blackbeak and the Thirteen Witches remain among Maas’s finest creations, with their arc reaching a genuine turning point; The connection between the Throne of Glass and ACOTAR worlds becomes explicit, rewarding readers of both series; and The ending delivers one of the most emotionally devastating cliffhangers in the series. These strengths are evident from the first pages and sustain across the whole work.

Themes

The thematic concerns of Empire of Storms give it weight beyond its surface narrative. Aelin’s plan has always been larger and more sacrificial than anyone around her knew — the gap between her public and private knowledge is a recurring theme. The cost of power and alliance-building in epic fantasy is personal — every favour owed diminishes sovereignty. Maas’s interconnected universe rewards long-term investment across series in ways single-series stories cannot achieve. The witches arc demonstrates that villains with genuine codes of honour are more compelling than those without. Betrayal lands hardest when it comes from those with the most cause to be loyal. These ideas emerge from the texture of the work rather than explicit statement, which is the mark of ambitious fiction done well.

Series Context

By 5 in the series, Sarah J. Maas has built enough world and character depth to sustain a story that would be impossible in a standalone. The accumulated reader investment pays off here: stakes feel genuine because the world feels real. The book does what good middle-series entries must — it satisfies on its own terms while clearly advancing toward a larger conclusion.

Limitations

The 700-page length with multiple simultaneous threads demands full series investment — casual readers will be lost. The romance payoffs, while earned, occupy considerable page real estate in a book with urgent plot stakes. New readers are entirely excluded — this is the fifth book in a long series with no on-ramp. These are worth knowing before starting, though they are unlikely to diminish the experience for the readers the book is written for.

The Connection Between Worlds

One of Empire of Storms’ most significant developments for long-term Maas readers is the explicit confirmation of what many had suspected: the world of Throne of Glass and the world of A Court of Thorns and Roses are connected. The mythology linking Prythian’s fae to the fae of Terrasen, the ancient history of the Wyrdgates and what lies beyond them, the echoes between the Valg and the forces that shaped the ACOTAR world’s darker corners — all of it converges here.

For readers of both series, this confirmation is a genuinely satisfying reward for sustained attention. Maas had been laying the groundwork for years, and the moment the connection becomes explicit has the quality of a puzzle piece clicking into place rather than an authorial decision made after the fact.

Aelin’s Hidden Architecture

The book’s most important structural element is also its most understated: the gap between what Aelin knows and what she tells the people she loves. Her plan is larger than any of her allies understand, her sacrifices more comprehensive than she has been willing to explain, and the gap between her public confidence and private knowledge — which her companions sense but cannot fully read — creates a specific kind of dramatic tension that pays off catastrophically in the final pages.

The cliffhanger is not merely an event but a consequence: everything that Aelin has been keeping private arrives at a cost that leaves the series’ final two books with a different shape than anyone had anticipated.

Final Verdict

Our rating: 4.4/5 — The penultimate act of the main saga, Empire of Storms sprawls across continents and delivers some of the most shocking reversals in the series. The world-building reaches its apex, and the final pages set up an ending that left readers devastated — and desperate for the next book.