Kurt Caldwell is confirmed as the serial killer targeting runaways. He kills his captive, Chloe, after she disrupts his ritual.

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.

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

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

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

In a rage over the overdose, Dexter hunts down the drug maker, Jasper Hodge, and kills him by forcing an overdose of his own drugs.

Angela discovers "Jim Lindsay" is actually Dexter Morgan after finding his obituary online. Harlan Coben's Run Away (2026)