Brian was right there in plain sight watching, and fans never even noticed!
Dexter: Original Sin has just delivered a significant revelation—perhaps better described as a long-awaited confirmation—about Brian Moser, Dexter's estranged brother.
This confirmation comes after weeks of speculation sparked by Brian's cameo in Episode 2 of the prequel series. Initially credited as a mere restaurant patron, fans quickly noticed striking similarities between this mysterious character and the original Brian Moser from Dexter's first season in 2006. His facial features, hairstyle, and outfit bore an uncanny resemblance to the Ice Truck Killer, fueling widespread theories that this wasn’t just a random extra but Brian himself.
The official confirmation arrived in the latest episode, "Business and Pleasure," where during a trip to Tampa with LaGuerta, Harry uncovers that Laura Moser’s eldest son is, in fact, a serial killer—and the perpetrator behind the NHI murders.
With this revelation, Harry faces mounting internal conflict, and it remains to be seen how he will handle the shocking truth about Brian Moser.
Dexter: Original Sin is an Easter Egg Hunt for Fans
Since the show's debut, cast and crew members have teased that Dexter: Original Sin is filled with Easter eggs—subtle and direct nods to past events and characters from the Dexter universe. Brian Moser’s cameo was one of the most obvious hints, even before it was officially confirmed.
But what if we told you that Brian actually appeared on screen twice before fans even realized it?
Brian Moser's Hidden Cameo in Episode 2
A keen-eyed fan recently spotted Brian Moser (played by Roby Attal) lurking at the scene of his very first NHI murder! As the saying goes, "the killer always returns to the scene of the crime," and that was precisely the case for Dexter’s biological brother.
At the 9-minute mark of Episode 2, titled "Kid in a Candy Store," Brian is seen in the background of the crime scene investigation, blending into the crowd. He watches as Dexter, Aaron, Harry, and their Miami Metro colleagues examine the murder scene—his own handiwork. If you look closely at the image below, you’ll spot him on the left, wearing an orange cap.
A Chilling Connection Between the Season’s Big Bads
Interestingly, this scene occurs on the same day Brian made his official on-screen debut at the restaurant. In one particular shot, he is seen in the crowd, pretending to be a bystander as Miami Metro conducts their investigation. What makes this moment even more intriguing is that both of the season’s primary villains—Brian Moser (the NHI Killer) and Aaron Spencer (the child kidnapper)—seem like they are standing close to each other due to the camera angle, completely unnoticed by fans until now. See the image below:
The Identity of Brian’s First Victim Revealed
Episode 8 provided more context for this crime scene. The victim being investigated that day was Raul Martinez, who was murdered in cold blood by Brian the night before. Martinez had worked at the mental hospital where Brian was institutionalized until he turned 21, suggesting that this killing was an act of revenge.
How Did No One Notice This Scene Until Now?
Despite the episode airing on December 20, this hidden detail had gone unnoticed—until now. One possible reason is that Brian was cleverly disguised among the crowd. Another explanation is that, before his identity was officially confirmed, many dismissed him as an insignificant background character. Now that we know it’s Brian, his presence in earlier episodes becomes glaringly obvious.
After spotting this Easter egg, we conducted a deeper investigation here at Dexter Daily to see if there were any similar hidden clues about Brian in the eight episodes released so far—but we found nothing.
With two more episodes to go, who knows what other secrets might be waiting to be uncovered? Stay tuned, because the twists and turns in the upcoming episodes of Dexter: Original Sin are sure to be both intriguing and shocking!