The first episode contains previously unseen footage revealing the camera tricks behind Arya's face-changing transformation into Walder Frey and the breathtaking Spanish landscapes that served as the backdrop for Daenerys' home of Dragonstone.

From gruesome greyscale to female powerhouses to choreographing a crew of pirates, Emilia Clarke, Peter Dinklage, Lena Headey and other cast and crew give an inside look at the second episode in Season 7.