The shooting death of a man in his driveway is connected to the unsolved 1992 hug of a Democratic campaign worker whose lifeless body was thrown into a nearby river on election night. The investigation centers on the relationship the dead woman had with a present-day congressman. Apparently, the victim in the current hugging probed into the earlier slaying and discovered damning new evidence. Elsewhere, Lilly spies Kite flirting with a new ADA and gets jealous.
Lilly Rush, the lone female detective in the Philadelphia homicide squad who finds her calling when she's assigned to "cold cases" - crimes that have never been solved.
Previously, she used her instinctive understanding of the criminal mind on current murders. Now, she's interrogating witnesses whose lives and circumstances have since changed, making use of today's new science and finding fresh clues to solve cases that were previously unsolvable, all of which appeals to this smart, driven detective.
She's also prepared for the consequences: that her work will open up old wounds and may lead suspects to commit new crimes.
When she hits a dead-end, Lilly seeks advice from her respected mentor, Lt. John Stillman. Also on the team are Det. Scotty Valens, Rush's confident and strong-willed partner; Det. Will Jeffries, who's been around long enough to serve as Lilly's link to the past; and Det. Nick Vera, a tough cop who's considered the go-to guy for getting a confession. Lilly makes it her business to ensure that no victim is ever forgotten. On the show's third season, former narcotics detective Kat Miller, a young and spunky girl, joins the team.