The Walking Dead

After Rick subdues Morgan who has attacked him, he tries to help Morgan remember who he is by saying that Morgan found him "last year" in Rick's front yard. Although the story's chronology is not synchronized with the series' calendar timeline, surely it has been more a year since Rick last saw Morgan.

*Actually, it is more likely to be slightly less than a year since Rick last saw Morgan. As Judith's parentage is questioned, we can assume that Lori became pregnant around the time Rick found her and Carl. (Again assuming she stopped sleeping with Shane once Rick returned.) Lori gave birth prematurely to Judith, so she would have been pregnant for less than 38 weeks. It also does not appear to have been more than 3 months since Lori's death (considering Judith's growth/development.) So unless Rick wandered for some months before meeting up with Glenn in Atlanta, it would have been nearly a year since Rick last saw Morgan.

Goof: At 40:49 Michonne is wearing a crossbow on her back. When the camera angle changes, the crossbow is already in the car as she is shutting the hatch.

Sarah Wayne Callies is listed in the opening credits of this episode.

The weapon that Rick uses in this episode is the M4 carbine.

Although listed in the main and guest credits respectively, both Lori (Sarah Wayne Callies) and Carol (Melissa McBride) do not appear in the episode (obviously).

As a tribute to the fallen in this episode, no music is played during the closing credits.

Dallas Roberts who plays Milton (the Governor's advisor) in this episode also starred in another AMC television series, Rubicon. Dallas played a genius-level analyst in a New York City federal intelligence agency.

Although credited in the main and guest credits, Andrew Lincoln (Rick), Sarah Wayne Callies (Lori), Norman Reedus (Daryl), Steven Yuen (Glenn), Lauren Cohan (Maggie), Chandler Riggs (Carl), Melissa McBride (Carol) and Scott Wilson (Hershel) do not appear in this episode.

This episode also marks the first appearance of Michael Rooker (Merle) and David Morrissey (The Governor) in the main credits.

As stated in the episode, the song that Beth and Maggie sing is called "The Parting Glass". It is a traditional song from Ireland and Scotland that has existed since at least the early 1600's and is sung at the end of gatherings.