A suspect has been identified in the 1990 cold case murder of a Seattle teenager through the investigative tool of genetic genealogy.

“Keeper of the Ashes” revisits the investigation into the rape and murders of three girls in Locust Grove, Oklahoma, over 45 years ago.

Investigators in South Carolina have made a significant break in the case of Brittanee Drexel, a teen who disappeared in 2009 while vacationing for spring break.

The 11-year-old girl was stabbed to death in Massachusetts more than 30 years ago.

More than 30 years after an 11-year-old girl was stabbed to death in Massachusetts, a suspect has been arrested for her murder.

Police say a South Carolina man has confessed to killing a woman in Alabama 21 years ago and hiding her body in a suitcase

A victim of the serial murderer dubbed the Happy Face Killer has been identified nearly 30 years after her body was left near a California highway

The team behind Adventures with Purpose has captured the attention of millions of social media followers as they work to solve missing person cases.

ABC News' Bob Woodruff follows cold case solving duo Adventures with Purpose as they dive deep to help families find their missing loved ones.

Police have named a man who died in 2013 as the serial killer responsible for the deaths of three women in the late 1980s.

Harry Edward Greenwell, who died in 2013, was linked to several murders through DNA evidence that was a 99.99% match to his own.

Police have named a man who died in 2013 as the serial killer responsible for the deaths of three women in the late 1980s.

Police say new DNA evidence has helped them identify the killer of a woman murdered 42 years ago. ABC News’ Andrea Fujii reports.

Suffolk County police announced that the alleged killer of Eve Wilkowitz, 20, who died in 1980 in Bay Shore, New York, was identified as Herbert Rice, a man who died of cancer in 1991.

Eve Wilkowitz, 20, was kidnapped and killed leaving a train station in New York in 1980.

DNA advances helped investigators solve the 42-year-old cold case of Eve Wilkowitz, who was killed in New York in 1980.

Authorities used DNA technology to identify the previously unknown girl as Sharon Lee Gallegos, whose remains were found in the desert in Arizona in 1960.

“Little Miss Nobody” finally has a name

The case involved a 9-year-old girl in Pennsylvania who was snatched and killed while walking to school.

The homicides were reportedly connected to the Dixie Mafia, the group involved in dozens of violent crimes across the Southeast in the 1960s and 1970s.

A 50-year-old triple homicide case has finally been closed, after a suspect's son provided clues that led investigators to the so-called Dixie Mafia.

DNA and fingerprint evidence was used to identify the suspect.

A North Carolina who went missing with her young daughter in 2016 have been found safe, according to authorities.

Terrance Prochaska said he was assigned to the unsolved Jodi Huisentruit case in 2010. “I thought, ‘What a great opportunity to do something that maybe I could make a difference,’” Prochaska said.

A convicted murderer has been charged in connection with two decades-old cold-case homicides, authorities said.

Charles Helem, 52, currently serving life in a Virginia state prison, confessed to two decades-old cold case homicides, police announced.

A man has been arrested on suspicion of killing a teenage girl in San Francisco,

Forty-five years after an Auburn University student vanished on his way to school, his car -- and possibly his remains -- have been recovered.

Authorities are investigating new clues on social media to help solve the 2017 murders of two girls in Indiana. ABC News’ Andrea Fujii has the new details.

Kyle Clinkscales' wallet was also discovered in the white Ford Pinto.

Kim Bryant, 16, was kidnapped, raped and killed on Jan. 26, 1979, police in Las Vegas said.

Federal marshals in Ohio say a 1969 bank robbery has been closed.

Opening statements have started in the trial of the 1984 killing of a 12-year-old Colorado girl

A Mississippi sheriff’s department says it has identified the remains of a woman found nearly 44 years ago

John Getreu was on trial for the murder of college student Janet Taylor.

The skyjacker vanished out the back of a Boeing 727 with $200,000 in cash.

The new details revealed for the first time have elements that ring of a movie.

An arrest has been made in an Oregon city's oldest cold case murder thanks to the novel investigative tool of genetic genealogy, authorities said.

Shelly Harmon was long suspected of killing her roommate in Arizona in 1988.

Authorities have arrested a 67-year-old registered sex offender from Nebraska in the 1983 slaying of an Iranian exchange student

A New Jersey serial killer known as the “Torso Killer” has pleaded guilty to two 1974 murders, finally closing the cold case deaths of teenage friends who had left home for a trip to the mall and never returned

The parents of Kristin Smart sued the father of the murder suspect, saying he caused them "severe emotional distress" after allegedly removing her body from his home.

A musician who created a podcast about the disappearance of California college student Kristin Smart is credited with helping police make an arrest after nearly a quarter-century

Paul Flores and his father Ruben Flores appeared in court Thursday after being arrested Tuesday in connection with the disappearance of Kristin Smart.

Authorities charged Paul Flores with murder and said he killed Smart during an attempted rape. His father is charged for allegedly helping hide the body. She disappeared nearly 25 years ago.

A former classmate of California college student Kristin Smart and his father have been arrested in connection with her disappearance. ABC News’ Megan Tevrizian has details.

Barbara "Bobbie" Jo Oberholtzer and Annette Kay Schnee were both shot to death, according to investigators.

A Colorado man has been arrested in connection with the unsolved murders of two women who were found dead in 1982, authorities said.

If you have any information, contact HBPD Sgt. Sam Shepherd at (714) 536-5947

More than 32 years later, the girl is still missing.