Actress Rebecca Van Cleave (photo below) worked closely with star Lena Headey on the gripping penance walk in Sunday’s season 5 finale. While filming the Walk in Dubrovnik last October, Van Cleave performed nude while Headey wore a simple beige shift. The show’s visual effects team then merged the performances together—combining Headey’s progression of facial emotions during Cersei’s punishing hike to the Red Keep and Van Cleave’s physical movement echoing Headey’s body language in order to create the seamless illusion that Headey was completely bare for the sequence.