Starting from this episode until the pen-ultimate episode, a new version of the main theme by Bear McCreary is used in the title sequence.
Around 30 minutes, when in the sewer, one of the walkers is wearing a dirty red and green stripped sweater. The walker is also horribly burnt, similar looking to Freddy Krueger.
In the Talking Dead companion broadcast for this episode, Director Greg Nicotero, stated that issues of the "Walkers" being able to climb, throw, and turn door knobs as demonstrated in the pilot and second episode of the series, Days Gone Bye (2010) and Guts (2010), would be revisited in the last set of episodes.
When Daryl is asking where Judith is, RJ is reading an Invincible comic book. Steven Yeun, who played Glenn Rhee in the first 6 seasons, voices the main character (Mark Grayson/the superhero Invincible) in the animated show, Invincible.