Threshing Day

By Rebecca Yarros

Welcome to Threshing Day, the brutal, high-stakes trial where would-be riders at Basgiath War College fight to earn the bond of a dragon or die trying. Amid ruthless competition and dragon fire, these thirteen cadets must survive a battlefield where desperate rivals will do anything to gain an advantage and dragons decide one’s ultimate fate―and where a single choice can forge a rider…or destroy them.

Xaden Riorson, the powerful leader. Rhiannon Matthias, the clever friend. Dain Aetos, the dutiful rule-follower. Liam Mairi, the kindhearted protector. Ridoc Gamlyn, the jokester. Sawyer Henrick, the underdog. Garrick Tavis, the dependable aide. Imogen Cardulo, the impulsive fighter. Bodhi Durran, the second-in-command. Mira Sorrengail, the fearless rider. Brennan Sorrengail, the brilliant tactician. Aaric Graycastle, the restless royal. Sloane Mairi, the determined sister.

On Threshing Day, there’s only one rule: don’t die.

The Empyrean series is best enjoyed in order.
Reading Order:
Book #1 Fourth Wing
Book #2 Iron Flame
Book #3 Onyx Storm

Though Threshing Day can be enjoyed as an introduction to the series, due to contained spoilers, it is best read after Onyx Storm.

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Published Sep 29, 2026

Average rating: 8.53

211 RATINGS

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The Enchanted Shelf: DFW Fantasy/Romantasy Book Club

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Community Reviews

Must Luv Romantasy Host
9/10 stars
We loved this book! We agreed it colored in the back stories and the characters we know and love. It helped us piece together the “during the rebellion” timeline/events and afterward. We loved that it gave us insight into Brennan and Asher’s relationship. And a big reveal about Imogen’s dragon. Just the snack we needed between the next book. We also recommend both the audiobook and Graphic Audio dramatized editions to consume it for superb - make you feel like you’re there acting.
Annie.S
8/10 stars
Loved hearing the stories of how everyone found and bound their dragons! Wish it was longer it ended too quickly!
CeLynasings
10/10 stars
This book not only is visually stunning but the fact that we get so many POV’s will help build the knowledge of the world that Violet and Xaden are trying to save. My favorite parts are hearing the dragons speak about their rider. The relationships formed between each dragon and rider make this love story even more formidable because of the bonds shared about each person’s character.
EMMlE
8/10 stars
So much fun to read!!! I freaking love yhe supporting cast soooo much. I love her, but I was grateful to have a small break from Violet
Bri_b
10/10 stars
Audio version!