A killer's book about his shady past becomes the key to solving the 29-year-old cold case of two high-school sweethearts and three other unsolved murders, leading police to believe he could be the Zodiac Killer.
A rookie cold-case detective investigating the brutal stabbing death of a bullied teenager notices a clue in an old crime scene photo that may help solve the 27-year-old case.
A woman is found murdered in her mobile home an Oregon man is shot dead.
After a woman's disappearance, the Los Angeles police get an anonymous call to investigate a suspect an eyelash is a clue in the death of a woman stabbed many times.
DNA evidence leads to the arrest of Houston's notorious "tourniquet killer" a young woman is found shot and burned in an olive orchard.
A member of the Chicago Police Department launches the Women's DNA Initiative to fund the testing of rape kits a deputy district attorney in Sacramento County, Calif., uses a DNA grant to find a killer.
A member of the Chicago Police Department launches the Women's DNA Initiative to fund the testing of rape kits a deputy district attorney in Sacramento County, Calif., uses a DNA grant to find a killer.
When a deadly house fire claims the life of a family in rural Oklahoma, investigators suspect foul play and a mother goes on a decadeslong crusade to find out what happened to her missing teenage daughter and best friend.
Detectives search for a man who rapes and kills women an ex-girlfriend is the prime suspect when a man goes missing.
The body of a man killed by a bullet is found in his well detectives try to connect a man to his ex-wife's murder.
Police suspect a former officer a blow to the head of a garbage collector leaves strange markings DNA may help to track down a stabber.
An ex-girlfriend helps to bring a child-murderer to justice a mysterious set of bones puts police on the trail of a teen's killer.
A mysterious note left on a grave may prove vital in solving a 12-year-old murder exhaustive questioning of a bereaved mother leads investigators to discover the fate of her three dead children.
A prostitute who fights off a screwdriver-wielding man helps police track down a serial killer undercover agents acting as mobsters conduct an elaborate sting to solve a murder case that had gone cold for years.
A prostitute who fights off a screwdriver-wielding man helps police track down a serial killer undercover agents acting as mobsters conduct an elaborate sting to solve a murder case that had gone cold for years.
When a deadly house fire claims the life of a family in rural Oklahoma, investigators suspect foul play and a mother goes on a decadeslong crusade to find out what happened to her missing teenage daughter and best friend.
Detectives search for a man who rapes and kills women an ex-girlfriend is the prime suspect when a man goes missing.
The body of a man killed by a bullet is found in his well detectives try to connect a man to his ex-wife's murder.
Police suspect a former officer a blow to the head of a garbage collector leaves strange markings DNA may help to track down a stabber.
An ex-girlfriend helps to bring a child-murderer to justice a mysterious set of bones puts police on the trail of a teen's killer.