Romantasy
Onyx Storm
The third book in the Empyrean series moves beyond the college and sends its riders on a dangerous mission across unfamiliar lands to find allies. The war is coming whether they are ready or not.
Facts last checked 2026-10-16
- First published
- 2025
- Pace
- Fast
- Length
- Long
- Pages
- 527
- Format
- Book 3 of 3 in The Empyrean
Read this if you are caught up in the series and want its bigger-scale, quest-driven chapter.
Skip this if you haven't read the earlier books or want a finished, standalone story.
The feel
Content warnings
Also reported by Hardcover readers:
Quick answers about Onyx Storm
- What is Onyx Storm about?
- The third book in the Empyrean series moves beyond the college and sends its riders on a dangerous mission across unfamiliar lands to find allies. The war is coming whether they are ready or not.
- Who should read Onyx Storm?
- Read it if you are caught up in the series and want its bigger-scale, quest-driven chapter. Skip it if you haven't read the earlier books or want a finished, standalone story.
- How long and how fast is Onyx Storm?
- It is a fast-paced, long read of about 527 pages, first published in 2025.
- Does Onyx Storm have content warnings?
- Content we flag: Violence, War, Death, Sexual content, Torture.
- Can I borrow Onyx Storm for free?
- Often, yes. Check Libby (OverDrive) to see whether your library lends Onyx Storm; the borrow button above searches it for you.
- What should I read after Onyx Storm?
- Readers who liked it often move on to Iron Flame, The Priory of the Orange Tree, A Court of Wings and Ruin.
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Where to get it
| Store | Price | Link |
|---|---|---|
| Borrow free | ||
| Libby / OverDrive | Free with a library card | Borrow free with Libby from Libby / OverDrive |
| Print, new | ||
| Amazon | Check price | Buy new from Amazon |
| Ebook | ||
| Kobo | Check price | Buy ebook from Kobo |
| Google Play Books | Check price | Buy ebook from Google Play Books |
| Audiobook | ||
| Audible | Check price | Buy audiobook from Audible |
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If you loved Onyx Storm
-
Iron Flame The second book, which sets up the stakes this one escalates.
-
The Priory of the Orange Tree A standalone epic with dragons, a large world and several story lines for a more complete read.
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A Court of Wings and Ruin A similar war-and-romance arc where a love story gets caught up in an invasion.
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