Cold Case stars Kathryn Morris as 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.
In 1995, two teenage boys went on a shooting spree at a local mall and committed suicide shortly afterwards. The team is prompted to re-open the case when new evidence suggests that there may have been a third shooter who got away.
The team re-opens the 2004 case of a female veteran of the Iraqi War when her prosthetic arm is found in a river. Meanwhile, Scotty visits his older brother in connection with a case that brings up painful memories from their childhood.
When the remains of a sandhog miner who disappeared in 1947 are found in a subway service tunnel, the team is prompted to re-open the case when they suspect the victim might have been murdered for being a union activist.
Lilly re-investigates a 1982 case where a newborn baby died under suspicious circumstances of what was reported as SIDS (sudden infant death syndrome).
Lilly re-opens a 2003 case in which an autistic boy's parents were shot in their car when Joseph brings her information that the boy might have seen the killer.
The team re-opens the 1958 case of a local celebrity, a radio DJ nicknamed "The Hawk", when they discover his death was staged to look like a suicide.
The team re-investigates the unsolved 1989 murder of a woman shot in an alley when the victim's video dating tape shows up in a dead man's apartment.
The team re-investigates the 1968 death of a policeman who was shot in his patrol car. The case was then ruled as a drug bust gone bad, but new evidence now reveals the victim may have been romantically involved with his partner.
When Jeffries' former partner comes forth with new evidence of the 2000 murder of a country singer, Lilly must travel to Knoxville, Tennessee with the reluctant Scotty in tow.
When a video clip of a missing student is found on the Internet, the team re-investigates the case of a talented 17-year-old boy who disappeared just a year before in early 2006.
The team re-opens the 1996 case of a wealthy woman who was afraid of the dark and died during a citywide electricity blackout.
In 2002, two kids were shot in front of two different schools on the same day at precisely 8:03 a.m. It's the fifth anniversary of the shootings, and Kat Miller wants to re-open the murders because she feels the cases are connected.
When traces of an explosive are found in a house, the team re-opens the 1981 case of a married couple who died in the same house in what was then ruled as an accidental gas leak.
Lilly re-opens the 1964 case of a murdered 17-year-old girl who was killed the day after giving birth to a baby girl in a home for unwed mothers.
When a body is found in a dumpster, the team re-opens the 1984 case of a murdered teenage boy who wanted to become a dancer against his father's wishes.
The team re-opens the 1999 case of a murdered homeless woman when her remains are found in a station wagon at the bottom of the river.
A desperate father turned serial killer coerces the team into taking another look of his son's 1987 murder.
The team re-opens the 1997 case of a 16-year-old high-school cheerleader when they discover an anonymous confession to the girl's murder.
The team re-investigates their oldest cold case yet, the 1919 murder of a young woman who was a passionate advocate for women's right to vote.
The team re-opens the 2005 case of a killed longshoreman who got tangled up with the Russian mob.
The team re-opens the 1998 case of a terminally ill man when a nurse comes forth confessing to euthanizing six of his former patients.
In the fourth season finale, a hostage situation arises when the entire team is held captive while they're investigating the 2006 killings of a family who had just moved into a new house.
Recovered from the shooting, Lilly wants to convince her boss that she's ready to get back to work. The team re-opens the 1994 case of three 10-year-old kids who were beaten to death when Lilly suspects the teens convicted of the killings may have been wrongfully incarcerated.
After a piece of clothing belonging to a murder victim is found, the team re-opens the 1998 case of a high school girl who had a reputation for being promiscuous.
When the victim's younger sister comes looking for her, the team re-opens the 2006 case of a missing Amish girl who was murdered while she was in Philadelphia experiencing the Amish rite of passage called "rumspringa".
The team re-opens the 1989 case of an unidentified Jane Doe when she dies in the hospital, after being comatose since the day she was shot 18 year ago.
The team re-opens the 2002 case of a 14-year-old math whiz whose half-brother exploited his unusual talents: card counting and safe cracking.
When human remains are discovered at the bottom of a well, the team opens the 1938 case of a housewife who went missing the night of Orson Welles' radio broadcast of War of the Worlds.
When the body of a newly missing boy is found in a cargo container along with the remains of three other victims who vanished in 1999-2003, the team realizes they're dealing with a serial killer.
The team re-opens the 1963 case of teenage girl who was then thought to have committed suicide. Now, new evidence leads them to believe the girl might have been murdered for acting and dressing like a boy.
The team re-opens the 1982 case of a well-liked young man who was shot to death after being accused of date rape by several female college students.
The team re-investigates the 1945 murder of a Japanese-American family man who was persecuted in his neighborhood following the Pearl Harbor attack. Meanwhile, Lt. Stillman has decided to retire from the force.
The team re-opens the 1999, 2001, and 2003 pipe bombing incidents that killed two and blinded one victim. The serial bomber is still on the loose and ready to strike again as he missed his latest target.
The team re-opens the 1998 case of a murdered 17-year-old girl when her father is arrested for beating another child.
After traces of blood linked back to a missing teen are found, the team re-investigates the 2006 case of a boy who disappeared from a high school for deaf children.
The team re-investigates the suspected 2007 murder of a bride-to-be who was kidnapped on the day of her engagement party. Lilly and Scotty travel to West Virginia to escort the prime suspect to Philly, and on their way back, they hear his side of the story.
When a severed hand is discovered at the scene of a drug bust, the team re-opens the 1997 case of a convicted criminal who was thought to be on the run from authorities all these years.
The team re-opens the case of a woman who allegedly committed suicide in 1962 when the victim's granddaughter comes forth with evidence that the note found on the death scene -- then thought to be the suicide note -- was not written in the victim's handwriting.
In the season finale, a drug addict mother, who lost her son in an apartment fire in 2005, comes forth claiming she just saw the same child in the park.
In the season premiere, the team re-opens the 1966 case of a young woman who was thought to have jumped overboard from an ocean liner.
The team re-opens the 1995 case of a skateboarding prodigy who lived on the streets.
The team re-investigates the 2004 death of a teen-aged boy who was wrongly sent to a a juvenile detention center.
The team re-investigates the 1970 death of a 20-year-old musician who was keeping a secret from his religious father.
The team re-opens the 1944 case of a female pilot who was part of a civilian program to aid the Air Force during World War II.
The team re-opens the 1986 death of a jockey when his remains are found buried with horses.
The team re-investigates Lt. Stillman's cold case from 1983, the death of a Chinese-American teen whose girlfriend had been killed by Chinese gang members only three months earlier.
The team re-opens the 1999 case of a high school debate champion whose death was originally ruled as a suicide.
The team re-opens the 1980 case of a murdered ice hockey player.
The team investigates 1983 murder of a graffiti artist who died from a fatal dose of paint.
When new evidence of potential foul play emerges, the team re-opens the 1971 case of a teenage circus aerialist who fell to her death while performing a dangerous new act.
At a colleague's wedding, Det. Jeffries convinces the rest team to re-open the 2008 death of the bride's previous fiancé.
The team investigates the 1986 murder of a pro wrestler.
Realizing that the missing Vera has finally hit rock bottom, his worried team members hope that a new twist to a 2006 arson case, which he was secretly obsessing about in recent weeks, might supply leads to his whereabouts.
When ballistics tie a recent murder case of Rush's to a serial killer who was seemingly inactive for 27 years, a tough FBI agent with ties to Stillman shows up to enlist the team's aid in finding the killer who has eluded her for 30 years.
After determining the serial killer's identity - and some of his likely future targets - the team and the FBI work together to apprehend him while trying to locate and protect the people he's preparing to kill.
Rush and FBI agent Ryan Cavanaugh discover their attraction for one another while investigating the 1969 murder of a GI at Woodstock, and Vera helps his married ex-girlfriend, Megan, after sentimental jewelry is stolen from her home.
Rush tries to ignore her father's appeals to give her troublemaker sister another chance after she suddenly resurfaces.
Valens partners with Rush to locate her abducted, drug-addicted sister, while Jeffries tries to bring justice to the case of a murdered teenaged girl that has haunted him for 17 years.
The 1973 death of a football player is reopened and allegations of steroid use arise.
Rush and the team look into the death of an inner-city school teacher, originally thought to be a carjacking gone wrong, when a former student finds her car keys in an old desk.
The team receives new evidence in a 1964 case which was then though to have been a hit-and-run. Now, a threatening letter addressed to the victim prompts Will and Kat to travel to Mississippi to re-investigate the death of a woman who was secretly involved in giving school supplies for black children.
The team re-opens the 1978 case of a teenage roller skater who was found dead in a ravine.
The team re-opens the 1951 case of a marine who went missing and never reported for duty after his shore leave.
When a body is discovered in the trunk of a car, the team re-opens the 1981 case of a missing single mother who used to work at a car dealership.
The team re-opens the case of a 12-year-old boy who died in 1969 when the retired detective who originally worked the case receives a new clue -- a toy rocket bearing the victim's name.
Lilly and the team look into a 1989 case involving a Russian opera singer. Vera has a strong recollection of the case being a rookie in the department at the time.
The team re-investigates the 1953 death of a murdered pin-up girl when an old photograph provides important new evidence.
When Dexter Collins, a young activist with a bright political future was found shot to death in 2005, it went down as a drug buy gone awry. Following a new tip regarding the location of the weapon, the police reopen the case and interview everyone from members of street gangs to his opponent for the city councilman seat.
In an episode featuring songs by Frank Sinatra, the team re-opens the 1960 murder of an airline stewardess whose remains are found in an old hotel.
The team re-investigates the 2007 murder of a mechanic who won $8 million in the lottery.
The team re-investigates the 1988 murder of a young TV reporter. Previously unseen news footage suggests she was on the verge of breaking a huge story about the unethical practices of a plastics company.
When human remains are found in a duck pond, the team reopens the 1967 murder of a brush salesman.
When the mother of a missing team storms into station. The case of a witness protection member is reopened when his body is identified by the missing teen.
The 1976 murder of a teen-aged girl is reopened when her father produces a photo of her and a vicious biker gang.
The team has to cope with their own emotions as they search for the shooter responsible for Jeffries' shooting.
In an episode featuring only John Lennon hits, the team suspect a 2004 arson that killed a psychiatrist may have been caused by her former patient.
The team re-investigates the 1958 case of a newlywed real estate developer when new evidence suggests his body might have been moved after he was killed.
The team re-opens the 1999 murder of a Cuban baseball star who fled to the U.S. after being fired from his team.
When the murder weapon from a 1963 case is unearthed, the team re-opens the murder of a pool hustler who was shot the same day President Kennedy was assassinated.
In the first part of the two-part season finale, the team re-opens the case of the first ever female cadet in a local military school who was murdered in 2005.
In the second part of the finale, the investigation into the female cadet's murder continues. As the team finds more and more clues, the killer tries to stop the investigation to remain hidden.