The blurb forOnyx Stormhas finally been revealed, andthe description of Rebecca Yarros’nextFourth Wingsequeloffers a major clue about Violet’s second signet.Onyx Stormis slated to hit shelves on June 17, 2025, and the sequel is highly anticipated — especially on the heels ofIron Flame’s jaw-dropping ending.Iron Flame’s conclusion reveals Xaden is an inntinnsic and a venin, but it keeps Violet’s power from Andarna under wraps. Fortunately, it’s likelyOnyx Stormwill unveil her second ability when it debuts.

There are manytheories about Violet’s second signet, with some positing that she can speak to the dead and others suggesting she can channel multiple powers. Yarros leaves clues leading up toThe Empyrean Series’biggest twists. With that in mind, it’s safe to assume that Violet’s second signet is probably hiding within the pages ofIron Flame.And the blurb forOnyx Stormadds support to one popular theory about her hidden ability:that she can detect when someone is telling the truth.

The cover of Onyx Storm by Rebecca Yarros with the Iron Flame and Fourth Wing covers enlarged as the background

Onyx Storm’s Blurb Supports The Theory That Violet’s Second Signet Is The Truth

The Fourth Wing Sequel’s Description States Only Violet Can Find The Truth

Onyx Stormpublisher Red Tower Books posted the blurb for the upcoming sequel onInstagram, alongside a video of Michael Eok reading it aloud. The description teases what readers can expect from theIron Flamefollow-up, and many of the story details are pretty straightforward. Violet and her friends will be more focused on war than lessons in theFourth Wingsequel, and they’ll be seeking allies for their fight against the venin. There’s a big emphasis on the storm that’s brewing, and the blurb teases more losses beforeOnyx Stormis through.

It’s interesting that only Violet can uncover the truth about the venin and Navarre, and this supports the common theory that she’s a truthsayer.

book cover imagery of Onyx Storm and Powerless and From Blood and Ash

There is one interesting detail inOnyx Storm’s blurb, however, which could be a clue about Violet’s second signet. Towards the end, the description reads, “They need an army. They need power. They need magic. And they need the one thing only Violet can find — the truth.” It’s interesting that only Violet can uncover the truth about the venin and Navarre, and this supports the common theory that she’s a truthsayer. Many readers believe her signet from Andarna will be the ability to detect lies. Such a twist would fit with her focus on honesty throughoutIron Flame.

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Of course, there are other reasons Violet may be the key to uncovering the truth inOnyx Storm. Her parents clearly knew more about the threats outside Navarre’s wards than they let on, and Violet’s father’s research is poised to deliver some huge revelations. With both of them gone, Violet may be the only one who can piece together their discoveries. But this might be a manifestation of her second signet, asthere are other clues that Violet could be a truthsayer inThe Empyrean Series.

The covers of Iron Flame, Onyx Storm, and Fourth Wing by Rebecca Yarros

All The Empyrean Series Clues That Point To Violet Being A Truthsayer

Her Entire Iron Flame Story Revolves Around The Truth

One of the biggest signs that Violet is a truthsayer inThe Empyrean Seriesis herIron Flamestory, which revolves almost entirely around uncovering the truth. The central conflict between Violet and Xaden involves Violet demanding honesty from him, even though he has secrets he can’t entrust her with yet. Violet also struggles with the inability to tell her loved ones the truth throughout the secondEmpyrean Seriesbook. And she exposes Navarre’s lies to all of Basgiath, insisting that they make their decisions based on reality rather than deception.

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There are also smaller moments that point to Violet’s second signet being the truth, like the recognition that Nora’s truthsayer signet is incredibly powerful. In fact,Iron Flamereveals that this is the strongest signet outside of being an inntinnsic. Yarros may have included this character and line to tease what Violet’s second power would be. And asRedditorHangree notes, Violet being a truthsayer would balance Xaden’s inntinnsic ability well. These signets would make them even more powerful leads, and they’d bounce off one another, just like their shadows and lightning.

The cover for Onyx Storm on a background of eyes

How Truth As Violet’s Second Signet Could Impact Onyx Storm & Its Sequels

It Would Make It Far Easier To Defeat The Enemy

Onyx Stormcan confirm whether Violet is a truthsayer when it debuts in January — and if she is,it could have a powerful impact on the rest ofThe Empyrean Series.The entirety of Yarros' story centers on secrets, and Violet will have a far easier time navigating the war if she’s able to sift through the lies. At present, both Navarre and the venin present a threat to Violet and her friends, and it’s difficult to tell who’s really on their side.

Alongside her lightning signet, it could make her one of the strongest players inThe Empyrean Series.

Onyx Storm Book Cover

If Violet’s truthsayer signet manifests inOnyx Storm, it’ll go a long way towards helping her defeat her enemies. She’ll be able to tell who’s deceiving her, and she might even be able to extract information that could help end the war. This puts her in a far more powerful position than she’s in at the beginning ofFourth Wing.Alongside her lightning signet, it could make her one of the strongest players inThe Empyrean Series.

Onyx Storm

Violet Sorrengail faces new political intrigue and battles old enemies while uncovering the secrets of her second signet. As she strives to save Xaden from venin corruption, her relationships with allies and dragons are tested, leading to intense confrontations and unexpected revelations in a world of dragons and magic​.