Fourth Wing fans believe they've worked out the fate of a central character after author Rebecca Yarros dropped a hint about book four. Ever since Onyx Storm hit bookstores on January 21, the bestselling author has been sharing insights into her creative journey and what's in store for the next installment.

The Fourth Wing author revealed the two things fans should look for in Onyx Storm for a big hint about one character's fate in book four

The book, the third in a series, has sold 2.7 million copies in its first week, and provided yet another example of the romantasy genre’s staying power.

Rebecca Yarros has left Fourth Wing fans 'stressed' after revealing a key plot point for the fourth book in The Empyrean series

As Rebecca Yarros’ Onyx Storm arrives tomorrow, fans of the Empyrean series are preparing for another round of emotional devastation. After the shocking cliffhangers of the first two books, the stakes are higher than ever,

Rebecca Yarros’s ‘Onyx Storm is the fastest-selling adult novel in the past 20 years. The book, the third in a series, has sold 2.7 million copies in its first week and is topping every bestseller list.

Book lovers Arizona O’Neill and Lu Aburawi talk about the phenomenon of Rebecca Yarros’s Empyrean series as the third book, Onyx Storm, hits shelves.

Little moments in Rebecca Yarros' bestselling fantasy novel "Onyx Storm" could have huge implications for the rest of her "Empyrean" series.

Bookshop manager Edward Woods refused to disclose how many copies had been sold in Romsey but said it had performed very well.