The Dexter franchise has long captivated audiences with its intricate storytelling, morally ambiguous protagonist, and thrilling murder mysteries. With the prequel series Dexter: Original Sin, new theories have emerged about familiar characters. One of the most compelling is the idea that Brian Moser, Dexter’s estranged brother and later the Ice Truck Killer, may already be an active serial killer in Original Sin. This article explores the evidence behind this theory and its potential impact on the show’s narrative.
Who is Brian Moser?
Brian Moser, introduced in the original Dexter series, is Dexter’s biological brother. Both boys were traumatized as children after witnessing their mother’s brutal murder. While Dexter was adopted by Harry Morgan and trained to control his violent urges, Brian was left in a mental institution, developing into a cold-blooded serial killer. In Dexter: Original Sin, which takes place in 1991, Brian has been out of the institution for about two years, making it plausible that he is beginning his own killing spree.
Why Could Brian Moser Be The Second Killer
🕵️ 1. Brian’s Possible Cameo in Episode 2
- In Episode 2, a mysterious man approaches Dexter at a restaurant and asks if a seat is taken.
- Fans speculate that this man strongly resembles Brian Moser from the original series.
- His attire, hair color, and demeanor closely match Brian’s established look.
🚚 2. The Ice Truck Easter Egg in Episode 6
- In Episode 6, an ice truck similar to Brian’s in Dexter is shown.
- This could be a subtle nod to his presence in Miami at this time.
🩸 3. A Serial Killer Testing His Methods
- The murders being investigated by Harry and LaGuerta involve different kill methods, suggesting a killer experimenting with techniques.
- Dexter theorizes that the killer is “figuring out what he likes,” which aligns with Brian’s development as a future serial killer.
- Each murder becomes more “intimate,” a characteristic of Brian’s later kills.
🔗 4. Connections to Brian’s Past
- The first two victims in Dexter: Original Sin were drug addicts, just like Brian’s mother, Laura Moser.
- The second victim was a sex worker, matching Brian’s future victim profile in Dexter Season 1.
- This suggests Brian may be targeting people who remind him of his traumatic past.
⌚ 5. The Watch Clue
- In Dexter’s mental reconstructions of the murders, the killer is always shown wearing a watch on his left wrist.
- Brian wore a watch on his left wrist in Dexter.
- While this could be a coincidence, it might be a visual cue foreshadowing Brian’s involvement.
🚨 6. Matching Kill Counts
- Both Dexter and this unidentified serial killer have exactly three kills so far.
- This narrative parallel suggests a connection between their journeys.
Could Brian Be Framing Someone Else?
One possibility is that Brian will avoid detection by framing another person for his crimes.
- Dexter may never realize his brother is the killer, keeping the suspense alive for the audience.
- Alternatively, Brian’s presence may be a slow-burning reveal that ties into Dexter’s future encounters with him in Dexter Season 1.
Potential Future Victim: Sanders
The subplot involving Sanders, a closeted police officer, raises further speculation.
- Sanders revealed that he was rejected by his family, leaving him isolated—just like the previous victims.
- This could make him a target for Brian, who might see his own story reflected in Sanders.
Why This Theory Matters
If Brian is revealed as the second killer, it could have major implications:
- Character Development for Dexter – It deepens Dexter’s storyline by foreshadowing his eventual confrontation with Brian.
- Expands the Mythology – It offers a prequel backstory for one of Dexter’s most iconic villains.
- Maintains Suspense – If Brian is hiding in plain sight, the tension builds until his true identity is exposed.
Conclusion
While Dexter: Original Sin has yet to confirm Brian Moser as the second serial killer, the evidence is compelling. With subtle Easter eggs, character parallels, and narrative hints, this theory remains one of the most intriguing possibilities for the prequel series. If true, it would not only enhance Brian’s backstory but also provide a deeper psychological exploration of Dexter’s path into darkness.
