Alas de Ónix [Onyx Storm] — A World Expanded, an Ending Unfinished

What happens when a fantasy series you love outgrows its own structure?

I was halfway through a Saturday of folding laundry and scrubbing counters when I started Alas de Ónix, the Spanish-language edition of Rebecca Yarros's Onyx Storm. Nearly twenty-eight hours of full-cast fantasy narration seemed like the perfect weekend companion. And for the first fifteen or so hours, it was exactly that — immersive, propulsive, and easy to lose myself in. Then the POV shifts started tripping me up, and by the final two hours, I'd abandoned the housework entirely to sit on the couch and try to figure out what the hell just happened.

Let's talk about the cast first, because this is a four-narrator production and it matters. Belén Heredia and María Carolina Yarussi handle the bulk of Violet's chapters, and when they're locked into the emotional beats — Violet processing a betrayal, Violet steeling herself before a dangerous negotiation — there's a warmth and steadiness to the reading that makes you forget you're listening to a performance. Micaela Oddera picks up what feel like secondary POV sections, and Diego Longstaff steps in for male perspective chapters, which is where the energy shifts most noticeably. Longstaff's tone is lower, more clipped, and it works well for the tactical and military-adjacent scenes. The problem isn't any single narrator; it's the handoffs. When the book switches perspectives — and it does this more frequently than previous installments — there's no audio cue, no chapter-break chime, nothing but a subtle voice change to tell you you're now in someone else's head. Multiple listeners have flagged this exact issue, and I experienced it myself: you'll be three or four minutes into a new section before realizing you've been mentally casting the wrong character. In a book this long, those lost minutes accumulate into genuine confusion.

The story itself picks up with Violet Sorrengail leaving the relative safety of Aretia to seek allies in lands Navarre has never engaged with. If you've read Alas de sangre and Alas de hierro, you know the formula — dragon bonds, war college politics, a romance with Xaden that runs hotter than dragonfire. My notes on Iron Flame get into how that formula first locked into place — and honestly, re-reading them while listening to this one made me appreciate how much heavier the stakes have gotten since. Yarros expands the map here, literally and figuratively. There are new cultures, new power dynamics, and a deepening of the dragon lore that gave me some of the book's best moments. A scene where Violet has to negotiate with leaders who have no reason to trust Navarre — and every reason to let it burn — carries real diplomatic tension. The political web gets thornier in satisfying ways, and Violet's relationship with her dragons evolves beyond the bonded-rider trope into something with genuine emotional weight.

But then there's the ending, and I need to be specific about why it frustrated me. It's not just that it's a cliffhanger — series readers expect cliffhangers. It's that the final ninety minutes introduce at least three major new plot threads (a revelation about Violet's power, a betrayal within the alliance, and a geographic threat that reframes the entire conflict) and resolves exactly zero of them. The pacing shifts from deliberate world-building to a sprint, as if the book suddenly remembered it needed to set up the next installment and crammed all the setup into the last stretch. I finished the final chapter and sat there genuinely unsure whether I'd missed something or whether the book simply... stopped. Some listeners have called this a high point for the series. Others have called the ending a disaster. Both reactions make sense to me, because the first twenty-five hours earn real investment, and the last two hours cash that investment into IOUs. The dramatized adaptation route is one way publishers try to solve exactly this kind of pacing problem — I kept thinking about Iron Flame (Part 1 of 2) (Dramatized Adaptation) and whether splitting the story structurally forces a more satisfying mid-point landing.

The Spanish production is technically clean — no audio glitches, no background noise, consistent volume across all four narrators. That's worth noting because multi-narrator productions can be messy, and this one isn't. The issue is artistic rather than technical: the narration style sometimes feels too measured for high-action sequences. Heredia's smooth delivery is gorgeous during introspective passages but doesn't quite spike when the scene demands urgency. It's not a mismatch bad enough to pull you out entirely, but it's there.

At twenty-eight hours, this demands dedicated listening time. The political maneuvering and world-building details reward attention; this isn't a book you can half-follow while grocery shopping. I'd queue it up for a road trip or a long stretch of focused time where you can track the POV shifts and absorb the new lore without rewinding.

Who Should Listen (And Who Should Skip)

If you're already invested in this series and you can tolerate sequel-bait endings — genuinely tolerate them, not just grudgingly accept them — then yes, spend the credit. The narration has real strengths, the world expansion is exciting, and Yarros still knows how to make you care about Violet and her dragons. But if unresolved storylines and ambiguous POV transitions are the kind of thing that makes you want to throw your headphones, wait until the next book is announced so you know the payoff is coming.