 In March 2011 , Dylan Minnette was cast as Rex Britten . Minnette commended the episode 's script , and noted the auditioning sequence was fast . He stated , " The process of getting the job actually went by really fast because the first audition Kyle Killen [ ... ] was in the room , Jason [ Isaacs ] was in the room , the cast director was in the room and the director was in the room . David Slade . And they were all there , for the first audition and I was like ' Wow ! Okay . ' " Minnette received the role two weeks after his audition . 
