WARNING! This article contains SPOILERS for Dexter: Original Sin season 1, episode 1!The premiere of Dexter: Original Sin revealed that Dexter actually survived New Blood’s ending, which reverses the most tragic Morgan family twist from its finale. Arriving approximately eight years after the original Dexter show’s divisive finale, Showtime’s 202 limited revival series Dexter: New Blood brought back the titular serial killer after he abandoned his son, faked his death, and vowed to stop killing. Of course, New Blood saw Dexter return to serial killing while under a new alias, which became all the more complicated once his estranged son Harrison, who has a Dark Passenger of his own, tracked him down.

https://screenrant.com/dexter-original-sin-new-blood-harrison-killer-erase-explainer/