The first major casting news for A Knight of the Seven Kingdoms Season 2 has arrived. Lucy Boynton, Babou Ceesay, and Peter Mullan are the newest additions to the HBO Game of Thrones prequel . They will play key characters from George R.R. Martin‘s second Dunk and Egg novella, The Sworn Sword.
The announcement comes just days after the Season 1 finale aired on February 22, 2026 . Production is already underway in Belfast, Ireland, as the series quickly builds toward its next chapter .
New Characters Join Dunk and Egg
Lucy Boynton, known for Bohemian Rhapsody and Barbie, will play Lady Rohanne of Coldmoat. She is also called the Red Widow and rules as the head of House Webber . The character is described as a formidable and sharp-witted landowner with a complicated past .
Babou Ceesay joins the cast as Ser Bennis of the Brown Shield. Ceesay, who appeared in Alien: Earth, will play a rough-edged knight whose loyalties remain unclear . His character serves as a sworn sword, a knight pledged to serve a specific lord.
Peter Mullan takes on the role of Ser Eustace Osgrey, the head of House Osgrey of Standfast . Mullan, a recent BAFTA nominee known for Ozark and The Witcher, brings experience in fantasy roles having also appeared in The Lord of the Rings: The Rings of Power .
These three characters form the core of the conflict in The Sworn Sword, which centers on a feud between Lady Rohanne and Ser Eustace over water rights during a brutal drought . Dunk finds himself caught in the middle of this dispute.
Season 2 Story and Production Details
The second season adapts the novella The Sworn Sword, which takes place roughly two years after the events of Season 1 . Showrunner Ira Parker co-created the series with George R.R. Martin and executive produces alongside Ryan Condal, Sarah Bradshaw, and Vince Gerardis .
Peter Claffey returns as Ser Duncan the Tall, the hedge knight at the center of the story. Dexter Sol Ansell is back as his squire Egg, secretly Prince Aegon Targaryen . Their travels take them to the Reach region where they encounter the new characters.
Filming began in December 2025 and continued through the Season 1 premiere in January 2026 . The cast and crew resumed work after a short holiday break and are now deep into production .
The first season received strong reviews, holding a 94% critical approval rating on Rotten Tomatoes . Viewership grew throughout the six-episode run, with the finale reaching 9.5 million viewers in the US within three days . This marked a 42% increase from the premiere.
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Release Window and Future Seasons
A Knight of the Seven Kingdoms Season 2 is scheduled to premiere in 2027 . The six-episode season will follow the pattern established by the first season, with episodes ranging from 30 to 60 minutes .
HBO renewed the show for a second season in November 2025, before the first season even aired . The network has discussed a plan for three total seasons, adapting each of the three Dunk and Egg novellas . A third season would likely adapt The Mystery Knight.
Showrunner Ira Parker has revealed that George R.R. Martin has shared unpublished Dunk and Egg material with him. This gives the creative team a clear roadmap for the characters’ lives beyond the published stories .
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