A good look at Melisandre, Stannis Baratheon, and Ser Davos Seaworth. At a guess, this is for a certain parley scene, in which case they’ve tweaked things a bit since Davos was not present in the novel. And Melisandre isn’t carrying Stannis’s banner.
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Stannis Baratheon, Melisandre of Asshai, Davos Seaworth, Behind the Scenes