"Game of Thrones" season 4 will cast a new character from "A Dance with Dragons," the fifth book in the "A Song of Ice and Fire" series written by George R.R. Martin, in order to further develop Theon Greyjoy's storyline in "Game of Thrones" season 4.

WinterIsComing.net reports a spoiler: "Game of Thrones" is once again taking some storyline from "A Dance with Dragons" for Theon Greyjoy's plot development for "Game of Thrones" season 4, which premieres this spring.

According to the CV of British actor Grahame Fox, he'll be playing the role of Kenning in an upcoming episode directed by Alex Graves. In the novel "A Dance with Dragons," Ralf Kenning is an Ironborn captain stationed at Moat Cailin, in a very tense situation, WinterIsComing.net reports. We'll have to wait until "Game of Thrones" season 4 airs before we'll know how and when Theon will encounter the captain and his men.

"Game of Thrones" has previously cast new characters in other storylines, such as Daenerys Targaryen and Bran Stark's, including characters not encountered until the fifth book in the "A Song of Ice and Fire" series.

According to WinterIsComing.net, Theon Greyjoy disappears from the books for a while, so it comes as no surprise that they're taking bits of his storyline from other books to continue his plot for "Game of Thrones" season 4.

But we're wondering: will there be enough material for Theon next year, if the next book in the series, "The Winds of Winter," isn't released yet by Martin? Let's hope he's almost finished with the fifth book!

Grahame Fox has appeared on programs such as Casualty, Atlantis, Midsomer Murders, and Merlin.

"Game of Thrones" premieres on April 6 at 9 p.m. ET/PT. Until then, HBO will air "Game of Thrones Ice and Fire: A Foreshadowing," which will be a 15-minute preview trailer. The preview trailer will air Feb. 9 at 8:45 p.m. ET/PT.