After months of speculation, we finally know what role Sherlock star Mark Gatiss will be playing in the upcoming Game of Thrones season 4.

Winter is Coming has discovered that Mark Gatiss will be playing the role of Tycho Nestoris. This information was revealed on the actor’s official CV.

Tycho Nestoris is a banker representing the Iron Bank of Braavos, who travels to Westeros in the A Song of Ice and Fire saga in order to reclaim the money which the bank has lent King’s Landing.

Nestoris will presumably not be a major player in Game of Thrones season 4, which explains why Gatiss was able to complete his scenes only a few days after filming started at his location.

IMDb has the actor listed as only appearing in season 4, episode 1, which has been written and directed by series creators David Benioff and D. B. Weiss.

Game of Thrones season 4 will premiere in the spring of 2014. It spans the second half of A Storm of Swords, the third book in the George R. R. Martin series.

Mark Gatiss will also reprise his role as Mycroft Holmes in Sherlock series 3, which premieres later this year on BBC. Check out an official teaser trailer for the new series here.

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