Threshing Day: Return to the Empyrean world with thirteen stories starring your favourite Fourth Wing characters.

Thirteen stories set in the Empyrean, the world of Fourth Wing, each one starring characters already known from the series. It is a place where power always demands a price, secrets darken every hallway of the war college and death is only ever a heartbeat away.

For anyone who has followed the series this far and wants more time with its riders and their dragons.