WARNING: SPOILERS ahead for Dexter: Resurrection episodes 1 & 2.
Two key actors from theDexterprequel series,Dexter: Original Sin, make appearances inDexter: Resurrection, the second sequel show and third spinoff of the celebrated TV franchise.Resurrectionpremiered its first two episodes exclusively on Paramount+ on Friday, August 17, 2025.
Dexter: Resurrectiontakes place after the events ofDexter: New Blood, the first sequel series of the franchise that was originally released in 2021.Original Sinfeatures many of the original characters fromDexterseason 1portrayed by a slate of new actors, including Patrick Gibson taking the reins of Dexter Morgan from Michael C. Hall.

Although it was initially reported thatNew Bloodwould be the final Dexter series ever made, showrunner Clyde Phillips revealed at San Diego Comic Con last year that another sequel series was in the works, with Hall set to return. That series,Resurrection, has earned a Certified Fresh Rotten Tomatoes score of 90%, becoming one of themost critically acclaimedDexterseasons of all time.
Original Sin’s “Little” Dexter & Brian Actors Cameo In Dexter: Resurrection’s Premiere
They Are The Only 2 Actors To Appear In Both Original Sin & Resurrection
The actors who play the little kid versions of Dexter Morgan and his brother, Brian Moser, inDexter:Original Sinappear inResurrection. The characters return when Dexter and Harry are talking about his childhood and how Harrison needs his father in theDexter: Resurrectionpremiere.
Child actorEli Sherman, who portrays young Dexter, and Xander Matero, who portrays Brian Moser, are the only two characters who have appeared inOriginal Sinto return inResurrectionso far. They will likely be the only two cast members to return, unless other flashbacks fromOriginal Sinare included in future episodes ofResurrection.

Sherman made his acting debut as Young Dexter inOriginal Sin, while Mateo has already appeared in multiple notable projects, includingThe Resident,The Righteous Gemstones,Five Nights at Freddy’s, andBad Monkey.
Brian Moser, who was revealed to be the notorious Ice Truck Killer inDexterseason 1, was originally portrayed by actor Christian Camargo.A twenty-something version of the character is also portrayedby Roby Attal in three episodes ofOriginal Sin.
Although Michael C. Hall does not appear inOriginal Sinapart from the opening teaser scene, he provides the “Dark Passenger” voiceover narration throughout the prequel series.
Little Dexter & Brian’s Original Sin Story Is Crucial To Watch Before Resurrection
They Are Featured in 7 Of 10 Episodes & Provide A Lot Of Key Context
Young Dexter and Young Brian are not just briefly depicted inOriginal Sin–they actually both appear in seven of ten episodes in season 1and are a major part of Harry Morgan’s backstory. Harry, who is played by James Remar in the original series and inResurrection, is portrayed by Christian Slater inOriginal Sin.
Original Sinalso offers key context to Dexter’s dynamic with the now-deceased Harry inResurrection.
Many more details get fleshed out aboutDexter and Brian’s shared and individual backstories inOriginal Sin, which changes how we see their characters inResurrection.Original Sinalso offers key context to Dexter’s dynamic with the now-deceased Harry inResurrection.
Ultimately, whileResurrectionis off to a fantastic start and is already considered one of the bestDexterseasons ever made,Original Sinenhances the viewing experience with crucial backstory elementsabout Dexter, Harry, and Brian.
BothDexter: ResurrectionandOriginal Sinare now streaming exclusively on Paramount+, with season 2 of the prequel series already in development.