After ten weeks of twists and intense storytelling, Dexter: Original Sin wraps up its first season this Friday with a highly anticipated finale. People involved with the show who have read the scripts describe the season-ender as surprising—a rarity for prequel series, which often struggle with predictability due to established lore.
While Dexter: Original Sin has given us younger versions of beloved characters from the original Dexter series, it has also introduced several new faces. Some have been minor side characters, while others have had a more prominent role. However, those not mentioned in the original series are the most likely candidates to meet their end—unless they find a way out of Miami Metro.
With a Dexter season finale typically being eventful, multiple characters seem to be at risk in Episode 10, "Code Blues." Below, we break down the most likely candidates to die—excluding those we already know survive in the original series.
Characters Who Might Die in the Dexter: Original Sin Season 1 Finale
Bobby Watt (Reno Wilson)
Detective Bobby Watt has had a rough couple of episodes. In Episode 8, "Business and Pleasure," he was critically wounded during a cartel raid, suffering severe blood loss after being shot in the neck. By Episode 9, "Blood Drive," he was seen in the hospital, whispering something about Dexter—a moment that could foreshadow trouble ahead. Will he make it through the finale?
Aaron Spencer (Patrick Dempsey)
As the season’s primary antagonist, Miami Metro Captain Aaron Spencer is a major contender for a dramatic exit. He’s been on Dexter’s radar after his actions toward Jimmy Powell and his own son, Nicky. While he managed to escape Dexter’s grasp once, will he be able to do so again?
Tanya Martin (Sarah Michelle Gellar)
Tanya, the Miami Metro forensics chief, has been a bit of a mystery. Despite being played by a high-profile actress, her screen time has been relatively limited, leading fans to speculate that she may be hiding something. Additionally, she is credited as a Special Guest Star—a designation often given to Dexter’s Big Bads or short-term characters. Could her story come to an end in the finale, or will she simply leave Miami Metro?
Clark Sanders (Aaron Jennings)
Officer Sanders is another Miami Metro character not mentioned in the original series. His interactions with Dexter have been minimal, and he lacks a major subplot. That could make him an easy target for a shocking death in Episode 10.
Nicky Spencer (London Thatcher)
The abused son of Captain Aaron Spencer has won over audiences with his tragic backstory. With his father revealed as his kidnapper, time is running out for Nicky. Now that Dexter knows the truth, could there be a chance for his survival, or will he be another casualty in the finale?
Becca Spencer (Amanda Brooks)
Nicky’s mother has been devastated by his abduction. As tensions reach their peak, could she also be in danger as the season concludes?
Harry Morgan (Christian Slater)
Finally, there's Harry Morgan. With Brian Moser back and seeking revenge for having Dexter taken from him, fans have speculated that Harry could be his next victim. Some even believe Brian was responsible for Harry’s death all along, making it appear like he took his own life. While this theory is compelling, we recently explored
why Harry may not die in the finale—read our speculation here.
Who Do You Think Will Die in Episode 10?
With so many characters at risk, the Dexter: Original Sin season finale promises to be a game-changer. Vote below for up to three characters you think won’t make it past "Code Blues."
Cast your votes now!
