Note: This is a newer/upcoming series based on the Harlan Coben novel. Dexter: New Blood - Season 1 Episode 5 - RUNAWAY

Harrison attends a "kill list party" where he is celebrated as a hero but ends up overdosing on fentanyl-laced drugs.

Dexter confronts Harrison about his dark nature after the incident with Ethan, which leads to a massive argument and Harrison running away. Key Events:

There are several TV shows with a first-season fifth episode titled (or very similar). Depending on which series you are looking for, here is the relevant content: Dexter: New Blood (2021) This is the most widely discussed episode with this title.