Cersei's handmaiden appears wearing short cut hair and a high-collared black robe. According to Michele Clapton, the costume designer of the series, fashion of Westerosi high society follows a trickle-down pattern; after Cersei adopted dark, high-collared gowns, her household would follow suit, and no woman would show up Cersei by wearing longer hair than hers, after the Faith Militant forcibly sheared it before her walk of atonement.
The first appearance in the series of Casterly Rock, the castle seat of House Lannister. Author George R.R. Martin based the location on the Rock of Gibraltar, a large mountain on the Spanish coast. The books mention that many catacombs, dungeons and entrenchments were dug throughout the mountain during gold mining activities; Tyrion may have connected these with his sewers, creating a way from sea level all the way up to the castle above to bring women inside, which is how Grey Worm can also infiltrate the castle through the sewers (like he did in Meereen in Oathkeeper (2014)). Although Castillo de Trujillo in Spain served as Casterly Rock on the show in some shots, production also shot on the set used for Riverrun; since director Mark Mylod had also filmed Riverrun in No One (2016) on these sets, he knew how to shoot it to make the location look differently.
The first appearances in the series of Highgarden, the castle seat of House Tyrell, and Casterly Rock, seat of House Lannister. This also marks the first appearance of the regional capitals of both the Reach and the Westerlands, making Storm's End (Stormlands) and Sunspear (Dorne) the only capitals that haven't been depicted (Storm's End was supposed to be in the background in Garden of Bones (2012), but budget limitations prevented this; the Dorne scenes in season 5 take place in the Water Gardens, a private residence near Sunspear).
This episode marks the first time that Sansa and Bran appear together in a scene since the entire Stark family greeted King Robert in Winter Is Coming (2011). It is also their first true interaction on the show, since they never talked before. The novels mention that she has more interactions with her true-born siblings than with Jon, but the series limited most of these to her arguments with Arya.
The episode title officially refers to the title held by the royal executioner, or, in the broader sense, the monarch's judicial authority. In the context of the episode, it refers to Cersei exacting her revenge upon some of her enemies.