Warning! Spoilers for WandaVision episode 4.
The fate of the beekeeper SWORD agent who infiltrated Westview in WandaVision episode 3 has yet to be revealed - so did Scarlet Witch kill him, or has he become another resident of Westview? The fourth episode of Marvel Studios' first Disney+ series revealed a significant amount of new details and made the overall narrative clearer. The storytelling perspective shifted from inside Wanda and Vision's bubble to the real world, showing how this pocket reality is seen from the outside.
Initially told from the perspective of Monica Rambeau, who returned five years after turning to dust from Thanos' snap, WandaVision episode 4, "We Interrupt This Program," explained how Monica was able to enter Scarlet Witch's fantasy world. As it turns out, she was sent by SWORD to help out FBI agent Jimmy Woo, who was searching for a missing witness that was supposedly set up in Westview. After Wanda presumably took over the town, it was wiped from the memories of anyone on the outside who were previously aware of Westview or its residents. While checking out the energy field bordering the town, Monica was accidentally sucked inside and became "Geraldine" in the pocket reality. From there, Woo, SWORD, and eventually Darcy Lewis worked doubly hard to get to the bottom of the mystery.
WandaVision episode 4 also explained where the beekeeper came from and who he really is. As hinted by the SWORD logo on the back of his suit, he's an agent of the organization sent in after Monica's disappearance. It's worth remembering that after his arrival distracted Wanda and Vision from the news that they're pregnant in episode 2, Scarlet Witch manipulated time and altered the course of the events so their attention wouldn't get diverted. Since that happened, however, the beekeeper hasn't been spotted in the show again, and with Monica violently kicked out after Wanda learned that she's an infiltrator, the big mystery remaining is what exactly happened to the beekeeper. Scarlet Witch did know that he's from the outside world as well, so why didn't she also kick him out of her pocket reality? Considering that he seems to have vanished, it's possible that Wanda may have killed him, intentionally or not, when she rewound time and shifted her reality forward into the 1970s.
Given Wanda's reaction upon realizing that Geraldine was from the outside world, it's not impossible to imagine that she may have done something even worse to the beekeeper. Between Elizabeth Olsen's recent comments and what's been revealed in WandaVision thus far, it's clear that Scarlet Witch is willing to go to great lengths just to preserve the fantasy she's created in Westview. This makes her so much more dangerous considering that she has the ability to warp reality.
Even if Wanda didn't harm the beekeeper initially, Monica's ability to infiltrate her pocket reality may have spooked her, motivating her to seek out the other invader and make sure that he doesn't threaten her fantastical world. It's worth remembering, however, that those who make their way in Westview seemingly forget their memories of the outside world - as suggested by Monica's experience. That said, they also seem to retain some details, as hinted by Herb's awareness that there's something inherently wrong in the town.
Whether or not WandaVision will show the beekeeper again is unknown at this point, but trailers for the series revealed that it will feature more of Westview moving forward. Perhaps it will be revealed that, just like Monica, he simply assumed a different persona to fit Scarlet Witch's fake reality. Otherwise, if he is still around and has regained some of his memories, he could be pivotal in SWORD's attempt to reach out to Wanda and stop her shenanigans.