Temple and Debreno probe the death of an ex-con after he crashes a stolen BMW with $180,000 in its trunk. Afterward, Mannion and his men began an investigation to prevent the dead guy's old girlfriend from being killed. A contract killer that killed one of Mannion's friends in New York 25 years ago is the hired killer they're looking for, but the woman they are protecting is behind the plan to kill her current husband and keep the money. It's Jack's second and final chance to catch the hitman. Mannion hires a personal wedding dress designer for Ella, who has second thoughts about her marriage. Nancy is diagnosed with Huntington's disease after falling from a fire escape and suffering a concussion while chasing a criminal.

A reporter accuses Mannion of committing a war crime in Vietnam 32 years ago by ordering 18 innocent civilians to be killed, and one of the chief's fellow soldiers confirms the story. Also, Temple and Debreno search for a 15-year-old boy they suspect is planning a murder for his gang initiation.