Cold Case Files Classic

Police run down more than 11,000 leads before coming up with a suspect in the murders of three girls. The abduction and strangulation of a woman continues to baffle investigators.

With access to the SFPD's work, including saliva samples, we reevaluate the case of the Zodiac Killer who began terrorizing California in the late 1960s--one of the first to send clues to the media.

Cops close in on a serial killer with the help of the Internet. And a drug trafficker jumps bail, goes into the bike shop business and helps pioneer the sport of mountain biking.

A former cop is a suspect in the murder of two nurses. A blow to the head leaves strange markings. Police hope that DNA will help track down the man who stabbed and killed a woman.

In the 1980s, a serial killer prowled the posh streets of Orange County. Police were unaware of the serial attacks until 1996, when DNA revealed the killer's secret and they linked four murders to a single DNA profile.

A mother is suspected in the murders of two of her daughters, when her third daughter finally convinces police to reopen two cold cases.

LA homicide detectives take a bandit who gunned down two police officers into custody. A suspected killer has an identical twin. Police suspect that a former cop committed the murders of two nurses.

A murderer's saliva helps seal his doom. Police crack a cold case with a DNA sample. An arson investigator is suspected of setting fires. A man is convicted of raping and murdering his neighbor.

Detectives track a man who murdered his wife after he's convicted of killing his third wife. A papergirl goes missing. A killer boasts to cellmates. Investigators probe the murder of a pregnant woman.

An undercover agent proves a wife had arranged a murder-for-hire. A man claimed his estranged wife committed suicide. Police solve a murder when divers find a skeleton.

A detective works for years to nab a man who murdered his wife. Years after the murder of a gas station attendant, detectives get a lead. A New Orleans police officer goes undercover on a riverboat.

The murder of a man leads police on a long chase for a man who's suspected of identity theft and bears a rose tattoo. A sheriff tries to get a mother to confess to killing her two babies.

Police must wait nearly 30 years before advances in DNA technology give them the chance to convict the killer of a young hitchhiker, and Philadelphia police wage a 16-year hunt for the man who raped and killed a 10-year-old girl.

Police crack a cold murder case when a woman calls and says her boyfriend is the killer; and the 1998 murder of a woman provides clues to the '88 murder of actress Myra Davis.

Testimony about larvae growth helps convict a murderer. The murder of a girl remains unsolved. A police officer goes undercover to gain a confession. A man goes on trial after a body is found.

A killer's plan goes awry. A reporter helps crack a murder case previously ruled an accidental death. Police obtain DNA evidence from a cigarette butt. A mother is convicted of killing her daughter.

Testimony about the growth of larvae in dead bodies helps convict the man who stabbed a couple to death and strangled their 4-year-old daughter in 1993.

After 23 years, investigators track down the killers of an Atlanta policeman when the ex-wife of one of the killers phones in a tip. A mother keeps the skeletal remains of the daughter she killed.

Undercover agents conduct an elaborate sting to solve a murder case that had gone cold for years. Detectives from three different departments team up; the "Bus Stop Rapist" becomes a suspect.

A woman who takes down the license plate number of a car that had been following her helps police solve the murder of another young woman.

The testimony of three inmates helps convict a man who killed a woman and a sex addict is a suspect in the murder of a neighbor. Cops close in on a serial killer with the help of the Internet.

A prostitute helps police track down a serial killer. Undercover agents acting as mobsters solve a murder case. A series of brutal rapes goes unsolved until a fluke audit of a license plate number.