Summary: An arrest is finally made five years after a mother of four disappeared while she was close to her apartment in Montana.

Summary: Authorities take two years and three trials to solve the shooting death of the wife of an FBI agent in the kitchen of her family's Virginia home.

Summary: When a woman returns two days after being reported abducted, authorities believe it's a hoax until a similar crime forces them to take another look; twenty-seven women who have accused Bill Cosby of assault get together to share their stories.

Summary: Twenty-seven women who have accused Bill Cosby of assault get together to share their stories.

Summary: Ten years after a 16-year-old boy confessed to a double murder and was sentenced to life in prison, a local businessman tries to prove the confession was coerced and the teen was wrongfully convicted.

Summary: The case of Johnny Hincapie, whose conviction for the 1990 murder of a Utah tourist in New York -- a case that represented a tipping point in the city's law enforcement -- was overturned after 25 years.

Summary: A 29-year-old woman goes missing.

Summary: Natalie Morales speaks to the mother of the teenage sexual assault victim from St. Paul's School; new details from both sides of the case, Owen Labrie's conviction and sentencing, and interviews with Labrie's friends and legal team.

Summary: When detectives track down the killer of a Las Vegas cocktail waitress and mother, it becomes clear that the investigation has just begun.

Summary: A tale of obsession, revenge and unrequited love is revealed when police investigate the murder of a doctor who is found dead in his Texas home.

Summary: The five-year investigation into the death of a retired corrections officer, who was killed by antifreeze poisoning, reveals multiple suspects.

Summary: When a graduate student is shot dead outside of her North Carolina home, a 911 caller leads detectives to believe the victim's fiance is the key to solving the case.

Summary: When a young, handsome veterinarian is found dead in his home in Montana, the mystery remains unsolved for nearly two decades.

Summary: Rachel Buffett, whose former fiance, Daniel Wozniak, was convicted of two grisly murders, talks about being at the center of the investigation.

Summary: Stacy and Jason Bingham discuss their five children's health issues as one child undergoes a second heart transplant and another child's heart begins to fail.

Summary: Stories from the people who were egregiously harmed by the actions of Michigan oncologist Farid Fata, who pleaded guilty to fraud, conspiracy and money laundering; how Fata's lies were exposed.

Summary: The 2015 retrial of Russell Faria, who was convicted years earlier for murdering his wife, reveals surprising new allegations.

Summary: Now exonerated, Eric Glisson discusses the 18 years he spent in prison for a murder he did not commit.

Summary: The controversial conviction of Steven Avery -- who was previously exonerated after spending 18 years in prison for a sexual assault he did not commit -- in the murder case of Teresa Halbach.

Summary: A thump heard by the children in a Carlsbad, Calif., home one summer morning is the first clue in a shocking mystery involving family secrets.

Summary: The investigation into the death of a Florida firefighter reveals a tale of secrets, lies and infidelity.

Summary: When 21 year old student Jamie Hart is found murdered along a Texas road , detectives begin the hunt for her killer.

Summary: Robert Davis, who was convicted of murdering a woman and her son, claims his confession was coerced and tries to prove he is innocent.

Summary: The mystery of a Florida hotel owner's disappearance confounds family, friends and the detectives investigating the case.

Summary: The drug-related death of a 17-year-old girl sheds light on a new class of synthetic drugs that has law enforcement agencies on alert.

Summary: Detectives suspect an inside job when a coin collector and his wife are found dead in their home with no sign of forced entry or evidence of theft.

Summary: When a couple in rural South Carolina is brutally murdered in their home, the investigation into who committed this heinous act tears a family apart. Dennis Murphy reports.

Summary: Prosecutor Marcia Clark reveals details about the trial of O.J. Simpson; interviews include Kris Jenner, Denise Brown, Fred Goldman, Kim Goldman, Kato Kaelin, Skip Junis, and Bob Costas.

Summary: An Army captain, back from serving abroad, is found dead in her El Paso home. The news stuns her tight-knit military community. Her husband has an alibi, but what about her family and friends? Andrea Canning reports on a case with many twists and turns.

Summary: Keith Morrison reports on a Chicago woman from a large family missing for several days. As the whole city joins in the search, detectives begin to suspect that a man in her life has many secrets.

Summary: A wife reports a prowler and shots fired in her backyard. Her husband, an Olympic bronze medalist, is dead. Was it murder, or an act of self-defense? Keith Morrison reports.

Summary: Dennis Murphy reports on a house fire that breaks out in the middle of the night in Kentucky. When Julie Griffith is found dead amongst the rubble, investigators soon discover the fire was anything but an accident. Keith Morrison reports.

Summary: After a sudden marriage creates tension between two families, a murder exposes secrets, lies and a long-buried mystery.

Summary: Before time runs out, detectives race to find a Little Rock, Ark., realtor who went missing after showing a house.

Summary: Emily Beckwith Fazzino was found dead in her bathtub by her husband, Alex Fazzino, in January of 2012. This weekend, the mother-of-three will have her tragic story outlined on Dateline NBC. Friday night’s episode entitled, “The Quiet One,” will detail how a loving mother was found lying unresponsive in a tub filled with water, and how the police investigation focused in on her husband as the killer. But, could they be wrong?

Summary: A community is left in shock when a Cornell student and star athlete gets caught in the middle of a homicide investigation.

Summary: A hairdresser-turned-detective uncovers the truth behind the murder of a teenage girl at a scenic spot on a Utah river. Dennis Murphy reports.

Summary: The security cameras at the home of a wife and mother of three's home may hold the key to solving the mystery of her disappearance.

Summary: Police in a small Texas town believe a man may be behind the shooting deaths of his wife and her son in their home.

Summary: A woman's story about an abduction and murder helps reopen a decades-old case that has weighed heavy on a New York town.

Summary: Four years after a 28-year-old dies after hosting a New Year's Eve party, a jury must decide if it was suicide or murder.

Summary: When a woman is found dead inside her Jacksonville Beach apartment, police hope they’ll quickly find her killer. Instead, it takes more than a year to solve their case. Andrea Canning reports.

Summary: A man dies in a shooting incident after tempers flare in a confrontation in Montana's Glacier National Park. Keith Morrison reports.

Summary: Radio host Robert F. Kennedy Jr. talks about the 1975 murder of Martha Moxley, for which his cousin, Michael Skakel, served 11 years in prison before his conviction was vacated.

Summary: The family of a young woman found dead in the Montana wilderness spends decades in pursuit of justice. Keith Morrison reports.

Summary: People involved in the investigation of the 1996 murder of 6-year-old JonBenét Ramsey discuss the case; case documents made public for the first time; footage of the police interview with JonBenét's brother.

Summary: The investigation into the death of an entrepreneur reveals secrets he had been hiding and a list of people who might want him dead.

Summary: In an all-new two-hour Dateline, Andrea Canning tells the story of a woman who falls to her death while hiking with her husband in Rocky Mountain National Park. Rangers question if her death was an accident or a heinous act of violence. Will a buried secret soon be revealed? Airs Friday, February 26 at a special time 9p/8c.

Summary: Colorado, 2014 - Pam Candelario is shot dead and her spouse Ralph is bludgeoned by burglars. Ralph writes an open letter to the town newspaper after he recalls the incident. Things start unraveling when Ralph keeps adding to his story.