While not episode 3.20, the character Greed is a major antagonist introduced in the early seasons who embodies the sin of desire.

Titled "Need vs. Greed" , it explores the betrayal and selfish motivations within the drug trade.

The thematic core of the episode is the collision between truth and self-interest. As the investigation unfolds, the detectives discover that the primary suspect, a seemingly respectable businessman, is part of a much larger web of deception involving financial fraud. The "greed" referenced in the title is multi-faceted: it is the suspect’s desire for wealth and power, but it also reflects the compromises people are willing to make—including victims—when money or reputation is on the line.