After young father Matthew Podolak dies from antifreeze poisoning, the manner of his death remains undetermined until his brother embarks on a quest for the truth.

Elizabeth Smart talks about her experience of being held captive for nine months when she was 14 years old.

Terrorism is suspected when a woman's truck explodes outside of the daycare center where she works.

A man claims his young wife killed herself after she is found dead in her burning home.

A man claims his young wife, Vashti Seacat, killed herself after she is found dead in her burning home in a small Kansas town. Keith Morrison reports.

A young father calls 911 saying that a car full of strangers opened fire on him, forcing him to fire back at them to protect himself, but the investigators aren't sure if his story of self defense is true, or if there's more to this shoot-out. Keith Morrison reports.

When a young woman's fiance is tragically killed at a bar on Halloween night, the authorities are charged with the difficult task of finding the identity of a killer who has not only disappeared, but was in costume on the night of the incident.

The tragedy of a couple's Delaware home burning to the ground quickly turns into an investigation when the remains of a 41-year-old woman are found amongst the ruins where the home once stood, and authorities aren't sure of her actual cause of death.

Two planes crash 12,000 feet in the air, throwing the passengers and pilots into freefall. How did everyone survive? Nine skydivers and two pilots share their story with Dateline on Friday.

Keith Morrison reports on the Martin MacNeill trial that captured the attention of the nation when the Utah doctor was accused of killing his wife by drugging her and drowning her in their bathtub, and then hiding evidence from the the police.

A woman lost, found dead in a tangle of blackberries. What happened to Nicole Pietz?

Kate Snow tells the unforgettable story of two families as they struggle to survive the Westgate Mall.

Survivors of the Westgate Mall attack in Nairobi, Kenya, share their stories

After a masked man killed a young mother and left her 5 year-old son for dead, a neighbor's past experience with a teenage stalker is drawn to the forefront of the investigation, but the relationship between the two parties may jeopardize the case.

When a dog trainer with celebrity clientele disappears, investigators track down a suspect with help from two witnesses.

After a 29-year-old woman was murdered and found dead in her own driveway, the case went unsolved for several years, but her best friend led a group of determined women who sought justice for her by trying to find the identity of her killer.

A family is convinced that a crazed killer is on loose after a mother of five is found dead in her bedroom after her son's baseball game. Keith Morrison reports.

The link between poverty and childhood asthma is explored by Lester Holt. Also: a look at bullied teens who pursue plastic surgery to rebuild self-esteem and prevent bullying.

A father rescues his children from a fire, but loses his wife.When a second tragedy takes his son’s life, his new wife begins to wonder.

When a retired California police officer takes a trip to visit his grandchildren, he is shocked to find his son-in-law dead on the kitchen floor. Lee Radder is dead. Was it suicide or something else? Keith Morrison reports.

Former Indiana State trooper, David Camm, came home to find his wife and children murdered. He would spend the next 13 years fighting to clear his name. Dennis Murphy reports.

Developments in the murder case against track star Oscar Pistorius, who is accused of killing his girlfriend, Reeva Steenkamp, in February 2013. Included: interviews with key witnesses. Keith Morrison reports.

After a 16-year-old girl mysteriously vanished one night, her parents learn that her best friends have been keeping a dark secret that supercedes any typical teenage drama. Andrea Canning reports.

A typical Indiana summer turns into a nightmare when the rigging above a concert stage collapses onto the audience; a Stanford graduate and his Buddist group leading wife live a life of guru devotion, ritual sex, delusion and more.

Thousands are gathered at the Indiana State Fair in August 2011, for a concert by the band Sugarland when tragedy strikes. Many will put themselves in harm’s way to try and save complete strangers in a life and death race against time.

When four young men from Canada and the United States set out to become the first people to row across the Atlantic from Africa to North America, their thrilling adventure soon becomes a nightmarish battle for their survival. Keith Morrison reports.

In 2011, Russell Faria found his wife Betsy dead on the living room floor in their home outside of St. Louis. Investigators soon zeroed in on Russell, but was the story as simple as it seemed? Keith Morrison reports.

A popular school superintendent is found dead just outside of his western New York home and the authorities investigating his death noticed that there were three missing exterior lightbulbs, which meant someone likely set a carefully planned trap. Dennis Murphy reports.

The 2008 murder of a teacher and mother is investigated. Keith Morrison reports.

The case of two brothers who have served 20 years behind bars have their case brought back to the forefront after a random Facebook message is posted. Keith Morrison reports.

A 24-year-old mother’s violent death in St. Augustine, Florida sets off a battle between her family and a powerful local Sheriff. Dennis Murphy reports

Columbine shooting survivor Sam Granillo is interviewed, discussing the event and the aftermath in the following years, and goes on a cross country journey to meet five other survivors of school shootings on the campuses where each occurred. Lester Holt reports.

Raven Abaroa and his wife Janet were a young couple with a promising future. Everything changed when Raven came home one night to see his wife stabbed to death in their home. With little hard evidence to work with, detectives began digging into the couple’s complicated past. Josh Mankiewicz reports new details in the case.

Two young teachers – one from Indiana, the other from New Zealand—fall in love on the eve of one of the greatest natural disasters in recent memory, the 2011 earthquake and tsunami in Japan. Would their love survive? Would they survive? Keith Morrison reports.

Two tenacious sisters turned detectives try to solve the mystery surrounding their mother's death. In an exclusive interview, Keith Morrison speaks with Tammie Cocard and Tiffany Young about their quest to fulfill a promise they made to their mother. No one could have imagined where their journey would lead

Two tenacious sisters investigate the mystery surrounding their mother's death.

A young mother vanished from a Seattle suburb. With an estranged husband, boyfriend and co-worker, authorities believed they had multiple suspects.Keith Morrison reports.

Some of the most incredible, death defying escapes to ever be caught on tape; authorities investigate the mysterious death of a young woman, whose body was found on the streets of Miami a mere four days after her wedding. Dennis Murphy reports.

The tiny Minnesota town of Little Falls becomes divided after two unarmed teenagers are shot and killed by a 64-year-old man when they broke into his home, leaving the authorities wondering if he is a killer, or simply a man protecting his property. Kate Snow reports.

A weekend away at a Colorado cabin takes a deadly turn after a married couple of 27 years go on an afternoon hike that ends in a drowning, and the subsequent investigation would require hundreds of pieces of evidence and five years to solve. Andrea Canning reports.

Investigating the connection between an attack and a woman's disappearance in nearby Denver.

Authorities investigate multiple suspects when a vibrant young woman disappears on her son's fifth birthday.

Twenty years later, Dateline provides new insights into a case that both consumed and divided the country. Josh Mankiewicz reports.

Josh Mankiewicz reports the story of a larger than life Arizona real estate developer and entrepreneur who was murdered in a stunning car bombing, and the subsequent investigation would end up taking nearly twenty years to solve.

An Idaho mother of seven who managed to survive a savage carjacking on a country road, leaving the authorities wondering who was the culprit behind such a violent act that went unsolved for many years. Keith Morrison reports.

Keith Morrison reports the story of two California families who were torn apart by greed, involving surprising twists, clever investigation techniques, and a secret letter.

the case of a mother who was murdered in her home that went unsolved for years, until a new detective took an interest in it, which resulted in an undercover investigation and several unexpected revelations coming to light. Josh Mankiewicz reports.

Authorities investigate the death of a young mother who was found in her own home by her identical twin daughters, in a presumably safe, gated community, leaving behind clues from her past that point to a potential love triangle. Keith Morrison reports.

Rebecca Musser speaks out about being born into The Fundamentalist Church of Jesus Christ of Latter Day Saints, what made her leave the polygamous sect, and her fight for justice.

Authorities are suspicious when a pastor loses his second wife in a strange accident.

An Iowa mother, home alone with her three kids, is attacked. The confrontation turns fatal. But is the truth more twisted than anyone could imagine? Dennis Murphy reports.

A 17 year-old trainee pilot who seemed to have vanished while over Montana during her first long solo flight, leaving her friends and family fearing that the worst had happened. Keith Morrison reports.

A mother of three and wife to a missionary is found dead in her own home on Valentines Day, and as the authorities begin piecing together what happened, they soon realized that the questions that arise seem to hit a little too close to home. Andrea Canning reports.

An aspiring actress and musician is found dead, leaving police to question if it’s tied to a nearby attack

A week before a wealthy banker's divorce was set to reach a settlement, an ex-con says he was hired to murder someone in the family.