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Get hot new details about Onyx Storm by Rebecca Yarros, Book 3 in the Fourth Wing series (The Empyrean). Besides the title, we have the publication date and hints Yarros has offered about the content to date. You’ll also be able to pre-order the Deluxe Limited Edition before it sells out. So, let’s “fire” it up!

onyx storm by rebecca yarros book cover.
Book cover revealed on Today on July 8, 2024

Onyx Storm (Empyrean #3 of 5): What We Know So Far

  • Onyx Storm Release Date: January 21, 2025
  • Publisher: Entangled, Red Tower Books
  • Genre: new adult fantasy / romantasy

Yarros told GMA that next in the Fourth Wing romantasy series in order will be Onyx Storm. She remarked, “There will be politics, new adventures, old enemies and of course, dragons.” See more below:

Plot of Onyx Storm: More Exclusive Details

Earlier, Yarros participated in a few detailed interviews with Entertainment Weekly and Variety. Here are some of the details she hinted at about Book 3:

Warning: There are spoilers about the end of Book 2 below.

“[E]verything you need to know about [Violet’s] second signet is actually in Iron Flame.” It will be revealed in Book 3.

We will learn more about Navarre’s royal family in Book 3.

Book 3 will also show how Aretia has survived without being caught.

Book 3 will explore whether the Sage really wanted Xaden, Violet, or both.

Yarros implied it wasn’t actually the same dream Xaden and Violet had about the Sage. (“It does seem like the same dream, doesn’t it? I think you should really enjoy book three.”)

Book 3 begins at Basgiath because Violet is safe from Xaden there. But we will see more about the weaknesses in the wards. She said the whole point is the question, “[W]ould you give up your shield to become your neighbor’s sword?”

Book 3 will also discuss why Andarna chose to hatch when she learned Violet would be the greatest scribe.

The Publisher, Red Tower Books, shared this brief trailer on Instagram:

In it, the voice of Tairn says:

“She needs to prepare herself. And so do you. There’s every chance this mission will kill us.”

Additionally, Instagram accounts associated with the publisher shared this teaser:

It reads:




Read More: Iron Flame Theories

On June 17, 2024, Rebecca Yarros shared across social media that “The first draft of Onyx Storm is off to my editor!”

On Instagram, @romantasy_readers_podcast posted clips of Rebecca Yarros speaking about Onyx Storm at an event. A few things she revealed: Violet has “one goal” and doesn’t care what’s in her way in trying to achieve it. Again, she reiterated that Violet’s second signet was in Iron Flame. She said “maybe” we will learn more about Violet’s father’s research.

About Onyx Storm From the Publisher

Preorder now and receive the stunning DELUXE LIMITED EDITION while supplies last―featuring gorgeous sprayed edges with stenciled artwork, as well as exclusive special design features. This incredible collectible is only available for a limited time, a must-have for any book lover while supplies last in the US and Canada only.

Pre-Order the Special Deluxe Edition of Onyx Storm:

Overview of the Empyrean Series and Author Rebecca Yarros


Rebecca Yarros is a graduate of Troy University and an American author of over fifteen books. She is best known for her bestselling dragon fantasy romance books in the Empyrean series, including Fourth Wing and Iron Flame. She will serve as the executive producer of the Amazon adaptation.

She and her husband co-founded the charity One October to improve the lives of kids in foster care.

More by this author: In the Likely Event is another popular choice with readers.

Frequently Asked Questions

What is the Empyrean Series book 3 release date?

Onyx Storm by Rebecca Yarros will be released on January 21, 2025. It is book 3 in the Empyrean series.

What is the title of Fourth Wing book 3?

Onyx Storm is the title of book 3 in the Fourth Wing series by Rebecca Yarros. It will be published on January 21, 2025.

What will Fourth Wing book 3 Onyx Storm be about?

Rebecca Yarros told GMA that Onyx Storm will be about “politics, new adventures, old enemies and of course, dragons.”

Will Xaden be in book 3?

Yes. Rebecca Yarros shared with Entertainment Weekly and Variety some details about Xaden’s story in book 3, including details about Xaden’s mother and the fallout from book 2’s cliffhanger.

What is an Onyx storm?

Onyx Storm is the title of book 3 in Rebecca Yarros’s Empyrean series. It is not yet known whether it refers to Violet’s second signet, her quest to save Xaden, the truth about Andarna’s dragon type, or something else.


Onyx Storm is the title of book 3 in the Fourth Wing series by Rebecca Yarros. It will be published on January 21, 2025. It will be about “politics, new adventures, old enemies and of course, dragons.”

Fourth Wing (Book 1 of 5)

Iron Flame (Book 2 of 5)

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