So Tiffany finds her old cop pal who covered for her own crimes, and she sets him up to be an informant against the guy who killed his brother. At all times, Tiffany is only thinking about herself, her career, her arrest record. Never even a thought about her friend. Even Scola the wimp cop has to wonder about her lack of ethics, compassion, or any other moral values.
Of course, everything goes sideways and the informant former-cop Ralphie (played by Will Dalton) decides to take out the drug dealer who got his brother killed. Along comes Tiffany to lecture Ralphie and talk at him, and to take him out when he looks like he may shoot the drug dealer. By killing him, she also tied a loose end to her corrupt career history.
Ebonee Noel, who played Analyst Kristen, the agent that Katherine Kane replaced, was an outstanding character with an A+ personality. By underwhelming comparison, Agent Tiffany is a corrupt cop who hates the USA, hates 99% of all non-minority folks, and is always dragging the show down with her whining, hatreds, complaining, etc.