Six of Crows: A Darker Shore — Letters from Ketterdam

Preview — not a finished-book review. Six of Crows: A Darker Shore: Letters from Ketterdam releases June 30, 2026 from Insight Editions and is available to preorder. This page previews what we know ahead of publication, drawn from the publisher’s announcement and the existing Six of Crows duology. We’ll update it with our full review once we’ve read the finished book.

A Return to Ketterdam

Few fantasy series command the devotion that Leigh Bardugo’s Six of Crows duology does. Six of Crows and Crooked Kingdom introduced Kaz Brekker and his crew of outcasts — thieves, spies, and survivors pulling off impossible jobs in the gritty canals of Ketterdam — and built one of the most beloved found families in modern fantasy. Six of Crows: A Darker Shore marks a genuine return to that world, and it is among the most anticipated Grishaverse releases in years.

According to the publisher, A Darker Shore is a new Grishaverse story set after the events of Crooked Kingdom — meaning it continues, rather than retreads, the story of the Dregs. For readers who closed Crooked Kingdom desperate for more time with these characters, that single detail is the headline: this is new canon set in Ketterdam after the duology’s conclusion.

An Immersive Epistolary Mystery

What sets A Darker Shore apart is its form. Rather than a conventional novel, it is described as a mystery told through found documents — letters, notes, and assorted ephemera from Ketterdam that the reader pieces together. The edition is built as an immersive object: it includes new illustrations by E.K. Belsher, original music composed by E. Aaron Wilson, and in-world collectible items designed to make the reader feel like they’re handling artifacts smuggled out of the Barrel itself.

This epistolary, multimedia approach is a natural fit for the Grishaverse, a world Bardugo has always rendered with rich texture and atmosphere. For a series whose fans obsess over every detail of Ketterdam’s geography, slang, and criminal politics, a story told through the city’s own documents is an irresistible proposition — and a very different reading experience from the duology that precedes it.

What We’re Anticipating

Based on the duology, readers can reasonably expect A Darker Shore to deliver the qualities that made the Crows so beloved: sharp wit, intricate scheming, and the prickly, deeply felt bonds between Kaz, Inej, Jesper, Wylan, Nina, and Matthias. A mystery format suggests a tightly plotted puzzle — fitting for a crew whose stock-in-trade is figuring out the angle everyone else has missed. How Bardugo uses the found-document structure to advance these characters’ lives after Crooked Kingdom is the thing we’re most eager to see.

It’s worth setting expectations on scale: this is positioned as a shorter, illustrated, collectible story rather than a third full-length novel. For fans, that’s less a drawback than a particular kind of treat — a beautifully made return visit rather than a sprawling new epic.

Why the Epistolary Format Fits

There’s a reason a found-document story feels right for these characters. The Six of Crows duology is, at heart, about information — who has it, who’s hiding it, and who can turn a stray detail into leverage. Kaz Brekker wins because he reads people and situations more closely than anyone else in the room. A narrative assembled from letters, notes, and intercepted documents asks the reader to do exactly what the Crows do: piece together the truth from fragments, watch for the lie tucked inside a polite phrase, and figure out the con before it’s sprung. Done well, the format turns reading into participation, and few fictional worlds are better suited to it than the scheming, secret-soaked streets of Ketterdam.

The collectible packaging — illustrations, an original score, in-world artifacts — extends that immersion off the page. It’s a deliberate bet that Grishaverse readers don’t just want more story; they want to hold a piece of the world. For a fandom that has spent years making art, maps, and playlists for Ketterdam, that bet looks well placed.

Where It Fits in the Grishaverse

A Darker Shore is not an entry point. New readers should begin with Six of Crows and Crooked Kingdom, the duology that establishes Kaz’s crew and the world of Ketterdam, since A Darker Shore is set after those events and assumes that history. Readers who want the broader Grishaverse can also explore Shadow and Bone, where Bardugo’s world began, and King of Scars. For the complete picture, see our Leigh Bardugo books in order guide, which lays out the whole Grishaverse reading order.

Why the Anticipation Is So High

The fervor around A Darker Shore reflects just how rare new Six of Crows material is. The duology concluded in 2016, and while Bardugo has continued to expand the Grishaverse through other series, the Crows themselves have remained largely off the page. A story that returns to them — and pushes their timeline forward past Crooked Kingdom — answers a demand fans have voiced for the better part of a decade. Add the collectible, illustrated, music-scored presentation, and A Darker Shore becomes not just a story but an event, the kind of release readers preorder the moment it’s announced. For anyone who has ever wanted to walk Ketterdam’s streets one more time, this is the most exciting Grishaverse news in years. We’ll have a full review once the finished edition is in hand; until then, preordering is the surest way to get a first-printing copy of what is shaping up to be one of the most collectible fantasy releases of the year.

Explore More

• Browse our full guide to the best fantasy reads.
• Leigh Bardugo Books in Order: Complete Grishaverse Guide