After a teenage girl who was dumped in the garbage by her parents 17 years earlier is approached by a man claiming to be her father, the team re-investigates the hit and run death of her father, Jimmy in 1988.
Lilly reopens the case of an overweight film student who was subjected to a cruel 'Hog Scale prank' at a fraternity party, after which she mysteriously died in a fire.
Lilly reopens the 1978 case of Angus, a young boy who was killed soon after a car accident that paralyzed his friend around the time the slasher film Halloween was released.
The case of a baseball player beaten to death with his own bat is reopened, and it's discovered that he had many enemies, and that his white girlfriend sparked even more racism and prejudice towards him.
A former mental patient named Betty Petrowski dies. The woman's only child, her son Otis, is called to identify the body and finds it is not the body of his mother. Det. Rush and her colleagues begin the search for Otis' real mother.
Brothers are being killed one by one as they grow to their teens. Flashbacks show how the family enjoyed Thanksgiving together until the killings started and the mother got addicted to drugs.
In the nineties, business school graduates Scott and Amy start up a computer health care business called Lionstaff, but Amy dies of a heart attack soon after and Lilly reopens the case.
The remains of a small girl are found under a bridge. The story goes back to the 60's and turns out the girl has a twin sister still alive. A sad family story begins to unravel.
The friendly owner of a local grocery store is murdered and Lilly reopens his case, finding that Frank was having issues with his rebellious son, his son's trashy friend Stump and his employee, Ricardo.
A young man's case is reopened after his 1988 murder went unsolved. The team look at his three friends to see if any of them had the motive for the shooting.
A grunge high school boy supposedly kills himself in 1994 and Lilly reopens his case, learning of the dark secrets he was keeping with three other outcast students during their detention together.
The Cold Case team investigates a 1960's case of a young débutant who fell to her death. They also discover that the girl's mother was very traditional and expected her daughter to follow order.
The Cold Case team investigates the case of a woman who was disemboweled violently by an unknown killer - a woman Scotty knew from his undercover years.
During a slow night at the P.P.D., it turns out to be anything but when a pitiful man shows up with a dirt-encrusted shovel, claiming to have just buried somebody alive.
A young female tennis player who won against a guy in a "battle of the sexes" style playoff is discovered strangled to death the next day, and her case is reopened.
Four years after the slaying, the Cold Case team investigates the murder of a cabbie-turned-actor who was shot to death outside the community theatre on opening night...
A corrupt cop's suicide leads to new questions about an old murder, challenging Detective Jeffries' belief that the man on death row for the crime is guilty -- and also putting Jeffries on a collision course with an arrogant ADA.
The "accidental" death of a woman newspaper columnist in 1945 is reinvestigated when old newspaper files indicate that the author of the "Hey Lo" column could have been murdered by a Nazi officer posing as a Dutch Jew.
A successful and loved emergency room doctor's case is reopened and Lilly learns that his life was rapidly becoming unmanageable thanks to his gambling addiction.
The recent case of a counselor working at a rehab center for drug-addicted youth is reopened, but there's much more going on than meets the eye. Detective Rush starts to cross the line of ethics as she becomes too emotionally invested.
