9 details you may have missed on Sunday's 'The Walking Dead'

When Carol mentions that she left Ezekiel some sesame bagels with her back turned toward him, she doesn't get a response.

Finding that odd, Carol senses something may have happened to Zeke. We later learn that he and more of their friends have been rounded up by people in the Commonwealth. However, if you had the captions on, you may have been privy to Ezekiel's capture at the start of the episode.

As Carol talks, the captions mention there's a "clattering" and "thud," both of which cause her to turn around and make her cautious for her own safety.

You may have forgotten, but Sebastian Milton had a girlfriend named Kayla who was introduced on season 11, episode seven.

On Sunday's episode, we appear to meet her mother. While visiting Sebastian's mother, Governor Milton, and offering her condolences, the woman, named Lena Brand, says that her daughter Kayla "is distraught."

Yumiko has largely taken over Michonne's comic storyline on the show.

In the comics, Sebastian doesn't die. Instead, Michonne is asked to defend Commonwealth officers who beat a random civilian to death and explain it away as an accident. Michonne stands by her decision to do this, explaining to Rick that the Commonwealth is a special place, news that concerns him.

The show goes against the comic as Yumiko refuses to prosecute her friend and defend the Commonwealth. Instead, she announces her intent to defend him. Viewers should feel a bit more attachment to this trial than the one in the comic since it deals with a beloved character, Eugene, instead of a random character.

We haven't seen Daryl's beloved canine in episodes. A small exchange between Carol and Daryl let's us know that Dog's still alive, but has also been taken by the Commonwealth.

Perhaps this line drop was meant as a hint that this may be Lance's last episode of "The Walking Dead;" however, maybe it's a tease of something larger.

In Rick's final episode, season nine, episode five, he was taken away on a Civic Republic Military (CRM) helicopter to one of the group's undisclosed locations.

We've been wondering if Lance may have some connection to the CRM. He told Pamela that if something happened to him that "certain alliances the Commonwealth has, certain stabilizing factors, are likely to become a problem."

Now that Lance is dead, what comes after his death? Hopefully, it means we'll finally see the CRM appear again in the show's final episodes.

On Sunday's episode, Lance tells a shocked Carol and Daryl that the Commonwealth has a working train.

"It was part of a plan, a vision, to expand the Commonwealth's reach ... connecting communities like yours all the way to the sea," Lance explains.

The assumption is that the Commonwealth is using prisoners — aka the rest of the missing people from the community, including Carol and Daryl's friends — to help build and finish the railroad.

"TWD" is subtly pointing out that history is repeating itself. The transcontinental railroad was largely built on the backs of the poor, including Chinese immigrants, slaves, newly freed slaves, and Native Americans.

In the comics, Eugene gets the idea to rebuild old train lines after the ordeal with the Commonwealth is settled. In the final issue of the comics, after 25 years have elapsed, Eugene has successfully created a working train line to connect communities and travel cross-country.

In season 11, episode 13, Lance briefly mentions he was setting some supplies aside for something. He revealed that he took some of the resources to rebuild Alexandria and directed them toward a secret project, referred to as "that other thing."

We thought the show was trying to smartly link the Commonwealth to the Civic Republic Military via Lance. But that may not be the case.

Looking back, he may have been discussing this secret railroad project. If that's the case, that reveal is a bummer since "TWD" had a chance to link up at least two of its shows.

In Sunday's episode, Carol kills Lance with an arrow through the neck before he has a chance to gun down herself and Daryl.

If you were wondering how Lance dies in the comics, he doesn't, as far as readers know.

In the comics, the character's fate is left open-ended. He's never seen when the comics jump forward in time for the final issue.

Earlier on Sunday's episode, Lance suggests to Carol that he's a bit envious of the bond she shares with Daryl. It's clear the two friends would do anything for one another. It's a connection Lance desperately wished he shared with Pamela Milton, the leader of the Commonwealth.

When Lance and Carol are later ambushed by Commonwealth soldiers, Daryl comes to the rescue. Once again, Daryl and Carol have each other backs. You can see Lance is stunned by the loyalty these two have for one another. At the same time, you get the sense he's a bit envious and saddened that he doesn't have what they do.

In the next scene, when Carol and Daryl give Lance an ultimatum to leave them or be killed, it subtly mirrors the one from moments earlier.

This time, instead of Carol and Lance being caught off-guard by the Commonwealth, Lance is the one taken aback.

But Lance didn't have a Carol to come and save him. He bled out alone without a friend in the world in, perhaps, one of the show's most unfortunate deaths.