Dateline NBC Show Summary, Upcoming Episodes and TV Guide

After millionaire businessman Lance Herndon is bludgeoned to death in his suburban Atlanta home, the search for his killer reveals no shortage of suspects - or secrets.

The broadcast features a new interview with Los Angeles District Attorney George Gascón, who recently filed a motion for a resentencing hearing for the brothers. As a scripted tv show reignites public interest in the Menendez case, Dateline will report on the latest, including a letter seemingly written by Erik to his cousin before the murders.

During The Menendez Brothers: Chance at Freedom, the prosecutor from the brothers' 1993 trial, Pamela Bozanich, opens up about defending herself against a wave of recent online criticism. She tells Morrison in a new interview that she bought a Mossberg shotgun to arm herself, which is the same type of gun used in the killings of the brothers' parents.

The episode also features interviews with additional key players in the case, including never-before-aired excerpts from Morrison's 2017 interview with Lyle.

A murder unearths an unsolved mystery from years earlier; as the connection between the two cases becomes clear, a long -hidden truth surfaces.

A 16-year-old calls 911 to report a break-in at her family's home. When police arrive, they discover her mother has been murdered, launching a years-long investigation that featured a false confession and revealed a dangerous romance.

The season 33 premiere of Dateline investigates the case of a young Ohio woman who vanishes one summer night prompting her community to conduct a massive search. When she's found dead, investigators question her friends and family to uncover her killer.

INTERVIEWS WITH: Ally & Dave Markham, Investigator Paul Newton, Reporter Karin Johnson.

When a woman who is eight months pregnant vanishes before her own baby shower, her family begins a desperate search. As detectives struggle to unravel the chilling mystery, they wonder: is it a missing persons case, or something far more sinister? Derrica and Natalie Wilson of the Black and Missing Foundation step in to advocate for answers.

INTERVIEWS WITH: Derrica & Natalie Wilson (Co-founders, Black and Missing Foundation), Detectives Jill Beauregard and Terry McLarney, FBI Agents Summer Baugh and Patrick Dugan.

When two women are murdered in the same Arlington, Texas apartment complex within the same year, police are stumped, and panic spreads across the city. Three years later, forensic evidence from two subsequent rapes provides a breakthrough, bringing the murderer and serial rapist to justice.

INTERVIEWS WITH: Chima Benson, Adriane Fields, Det. Tommy LeNoir, Investigator Joel Stephenson, Hiep Vu.

When the wife of a popular Atlanta DJ is found murdered with her two young children at home, investigators try to unravel what happened. The chilling echo of another DJ's murder just months prior raises suspicions of a targeted attack on the city's music community.

INTERVIEWS WITH: Jeezy, Nick Love, Tommy Jackson, Christina Lee, Sabrena Swinger

When a New Jersey woman goes missing, investigators uncover her husband's chilling history, including dark secrets about another missing wife. Would he be caught before he put another woman in danger?   

INTERVIEWS WITH: Det. Dave Mansue, Former Supervisory Special Agent Bob Hilland, Dedy Childers, Sherrie Davis.

When Joy Hibbs is found dead in a house fire, an autopsy shows she was murdered beforehand. Even with multiple suspects, the investigation stalls, leaving the case cold for years. Decades later, a shocking secret is revealed.

NEW INTERVIEWS WITH: Det. Michael Slaughter, Charlie and David Hibbs, D.A. Jen Schorn, April Atkins.

Twenty-seven-year-old Egypt Covington is found murdered in her home; investigators in Michigan quickly identify a person of interest but years pass without an arrest.

When a firefighter is killed, the murder investigation unravels a web of secrets, a love triangle and stunning surveillance footage.

Idaho resident Christopher Tapp is sentenced to life after falsely confessing to the murder of his friend Angie Dodge. When the real killer is caught over 20 years later, the case appears to finally be closed until a chilling twist begins a new chapter in the decades-long saga. Friday's two-hour episode features the latest developments, including correspondent Keith Morrison's sit-down with Tapp. 

NEW INTERVIEWS WITH: Chris Tapp, Bill Squires, Jeremy Sargis, Steven Drizin, CeCe Moore.

A mystery looms over a small New York town when a woman is murdered and a stunning secret is exposed; more than a decade later, new developments lead to an unexpected conclusion.

Navy petty officer and devoted mother Sherri Malarik is found shot to death in her minivan after she disappeared. The case remains cold until new revelations and old memories resurface, dividing the Florida family. In Friday's two-hour Dateline, her grown-up children speak out about the two-decade search for answers.

INTERVIEWS WITH: Tera and Jacob Malarik, Tina and Jeff Leake, Jennifer Spohn, Detective Buddy Nesmith, State Attorney's Office investigator Wayne Wright, Assistant State Attorney Amy Shea, Defense Attorney Chris Crawford, and others.

When Corey Shaughnessy wakes up to gunfire in the middle of the night, she shoots at the intruder and miraculously survives, only to discover that her husband Ted has been killed. Detectives wonder if the couple's job as local jewelry shop owners could be a possible motive until the investigation takes a turn that no one saw coming. 

INTERVIEWS WITH: Corey Shaughnessy, Nicolas Shaughnessy, Travis County Sheriff's investigators James Moore and Paul Salo, Defense Attorney Rick Flores, family friends Tad Cole and Vicki Frenk, and others.

Andrea Canning reports on the latest twists and turns in the case in which firefighters discovered a New Jersey man dead in a house fire, but an autopsy revealed he had been shot to death.

After trumpet player Scott Sessions fails to show up for a scheduled gig, his family learns his body was abandoned in the remote Colorado Rockies; as the investigation narrows in on two suspects, a second murder catches police by surprise.

When 17-year-old Alissa Turney is reported missing in Phoenix, it takes years before detectives treat her case as a homicide. A new investigation unearths dark family secrets, leading to a dramatic courtroom drama and an outcome no one saw coming.

INTERVIEWS WITH: Detective William Andersen, Alissa's brother James Turney, Deputy County Attorney Vince Imbordino, and others.

In a Dateline NBC exclusive, lead detectives speak out about the investigation into once-prominent South Carolina attorney Alex Murdaugh, convicted last March of murdering his wife Maggie and son Paul.

For the first time, South Carolina Law Enforcement Division investigators Britt Dove and David Owen speak out about the moment they discovered video evidence proving Alex was at the scene of the murders when they occurred. Dove explained to NBC News' Craig Melvin that after listening to the video 'three to four times,' he was in 'disbelief.' Owen added he knew at that moment the case had been blown wide open, saying: 'I can prove that Alex was lying to me.'

The Murdaugh Murders: Inside the Investigation also features an interview with the former Murdaugh family housekeeper Blanca Turrubiate Simpson, who opens up about her unique history with the Murdaughs, as well as Judge Clifton Newman, who presided over the murder trial. 

Dateline investigates the murders of several women found dead along Gilgo Beach in Long Island, New York.

During The Hunt for the Gilgo Beach Killer, Heuermann's former neighbor Jimmy Mack speaks out in his first TV interview, telling Dateline that he 'immediately' had a bad feeling about Heuermann. Additionally, Mack revealed that they had a 'confrontation' after Heuermann allegedly threatened to cut the tires of a car in Mack's driveway that partially blocked the sidewalk.

The special also examines the death of Shannan Gilbert, whose remains were found on Gilgo Beach in December 2011. Speaking out for the first time since Heuermann's arrest, Shannan's sister calls for Suffolk County Police Department to reopen her sister's case.

The investigation into the mysterious disappearance of Canadian limo driver Dwayne Demkiw sparks an international manhunt for an elusive killer with multiple false identities.

INTERVIEWS WITH: Edmonton Homicide Detectives Brian Robertson and Rob Bilawey, Dwayne Demkiw's friends Kayla Polihronopoulus and Darren Boisvert, and others.

The murders of two young women near a Phoenix canal in the early 1990s remain unsolved for over 20 years until a team of cold case detectives take on the case. Friday's all-new Dateline examines how investigators used inventive techniques and groundbreaking advancements in forensic genealogy to unmask the killer.

INTERVIEWS WITH: Former Phoenix Police Department Sergeant Troy Hillman, Defense attorney RJ Parker, forensic genealogist Dr. Colleen Fitzpatrick, co-workers of the victims, and others.

After an apparent home invasion in Minnesota leaves 25-year-old Heidi Firkus dead and her husband Nick hospitalized, detectives learn the young couple was facing financial troubles. In Friday's all-new Dateline, insiders connected to the case speak out about the decade-long search for justice. 

INTERVIEWS WITH: Heidi's brother Pete Erickson and sister-in-law Jolene Erickson, Nick's second wife Rachel, Nick's close friends, and others.

A small Texas town is shattered when beloved teacher Manuela Allen vanishes from her home in the middle of the night. When a gruesome discovery is made a short time later at a local lake, investigators are left with more questions than.

INTERVIEWS WITH: Julius Mullins, Texas Ranger Michael Schraub, family members, and others.

When three women discover the body of Emily Noble in a wooded area near her home nearly four months after she went missing, investigators must determine if her death was a suicide or homicide. In Friday's new Dateline, Emily's husband, Matt Moore, speaks out in an exclusive interview about the case that rocked a small Ohio town.

In the exclusive interview, Darrin speaks out about his relationship with Jamie's wife, Jennifer Faith, which began when they dated in high school. When the pair reconnected decades later, Darrin says he was manipulated by her false allegations of Jamie's abuse. Darrin tells Dateline that when he committed the fatal shooting, it felt like he was on a 'mission in the military,' adding, 'I was doing what I had to do to protect Jennifer.'

Losing Faith also features interviews with homicide detective Chris Walton, detective Eric Barnes, federal prosecutor Rick Calvert, reporter Cyrus Cezar AKA ‘Smash Da Topic,' Darrin's attorney Juan Sanchez, friends and family members, and others.

Law enforcement officers investigate a string of deadly shootings targeting women in the border city of Laredo, Texas.

After a district attorney and his wife are murdered in the same Texas town where a prosecutor was gunned down two months earlier, local law enforcement fears they may be in the sights of a serial killer.

Exclusive new details on the investigation into the murders of four University of Idaho students.

A man convicted of the 1997 murder of Ricky Cowles Jr. in Lancaster, California, reveals new details on the case in an exclusive interview.

The man at the center of the international manhunt for an American fugitive accused of faking his own death to evade law enforcement agencies speaks out for the first time on network television.

The latest in the murder of Laci Peterson, including new details on the appeals of convicted killer Scott Peterson. Keith Morrison reports.

The parents of Kristin Smart speak out in their first network exclusive interview since the recent sentencing of their daughter's killer.

The murder of former NBA star and hometown hero Lorenzen Wright sends shockwaves through the city of Memphis; insiders speak out about new developments in the lengthy search for justice.

The latest in the trial of once prominent South Carolina lawyer Alex Murdaugh, including exclusive interviews with insiders close to the family.

The missing-persons case of 12-year-old Jonelle Matthews in Colorado remains a mystery for more than three decades until detectives narrow in on a suspect whose bizarre behavior after her disappearance hints at something much more sinister.

A deadly high-speed chase in Montana leads 'Dateline' on a search through 50 years of history to unravel the mystery of how one man turned into a monster and committed one of the state's most notorious crimes.

Latest in the investigation into the murder of four University of Idaho students.

In this episode, journalist Keith Morrison interviews Brittanee's relatives and friends, including her father Chad Drexel, and investigators about the search for the Chili teenager that spanned more than 13 years.

Brittanee was 17 and a Gates Chili High School junior when she went missing in April 2009 while on a spring break trip to Myrtle Beach, a trip she took without her parents' knowledge or permission.

During the two-hour-long episode, Morrison also questions Raymond Moody, the man who has admitted to kidnapping and murdering Brittanee Drexel. Authorities believe Brittanee was killed the same day she disappeared.

On May 16 of this year, South Carolina authorities announced that Brittanee's remains had been found about 35 miles south of Myrtle Beach. Days later, Moody, a convicted sex offender and longtime person of interest in the case, was charged with kidnapping, murder and first-degree sexual misconduct in Brittanee's death.

Moody pleaded guilty in October and admitted he killed Brittanee, saying, 'I was a monster when I took Brittanee Drexel's life.'

Also, during the episode, Morrison interviews Georgetown County Sheriff Investigator Phil Hanna, Myrtle Beach Police Investigator Mike Hull and Captain Kin McKenzie of the South Carolina Law Enforcement Division, who together explain how officers zeroed in on Moody.

Florida detectives investigate a murder mystery in a wealthy gated community.

Insiders reveal new details about the deaths and legal cases surrounding Alex Murdaugh.

The investigation into a deadly home invasion involving business owner Milton Sawyer takes a turn when an unlikely witness on the other side of the country comes forward. Dennis Murphy reports.

A family begins a relentless pursuit of justice after the death of Nevada attorney Susan Winters.

Texas detectives uncover a trail of sexual assault crimes while investigating a murder.

Keith Morrison reports on the murder of star gravel cyclist Anna Moriah Wilson and interviews insiders in the case that sparked worldwide headlines.

Chef Dan Brophy arrived for work at the Oregon Culinary Institute in Portland, Oregon, early on Saturday, June 2, 2018.

The Culinary Institute, also referred to as OCI, was both a school and a restaurant. That Saturday was a test day for students and as a chef and teacher there, Dan had much to prepare.

But just minutes after he got to work, Dan Brophy was shot in the back in Kitchen One. About ten minutes later, a colleague found Dan lying on his back in front of a large kitchen sink. A student called 911.

EMTs soon arrived and pronounced Dan Brophy dead. He was 63. Josh Mankiewicz reports.

Dateline (again) investigates the 2012 murder of Leslie Neulander, a 61-year-old woman who died in her 8,000 square-foot mansion in DeWitt, New York, a suburb of Syracuse. Neulander's death was initially reported as an accident, that she had a bout of vertigo, slipped and fell in the shower, fatally hitting her head on a marble bench in the shower.

In 2015, Leslie's husband, former OB/GYN Dr. Robert Neulander, was found guilty of her murder. After Neulander spent three years in prison, a court overturned the conviction in 2018 because of one juror's misconduct. Throughout his first and second trials, Robert Neulander has received strong support from his two children, Ari and Jenna, and Leslie's sister, Joanne London. 

Detectives search for answers after 34-year-old mother Annastasia 'Annie' Hester is stabbed to death in a Portland, Oregon suburb; investigators uncover personal details that point to multiple suspects and possible motives.

The detectives who cracked the case of Sherri Papini, a California mother who alleged she was kidnapped and held hostage for three weeks in 2016, reveal new details about the investigation that captivated the nation.

When a former Arkansas State Senator is found fatally stabbed, investigators must determine if her murder is connected to her political career or her personal life. Dennis Murphy reports.

A family gathering ends with one man dead, leading to more than a decade of questions — was it suicide or murder? Keith Morrison reports on the latest twist in the case.

A mystery in paradise unfolds when a British woman, Sarm Heslop, vanishes from her boyfriend's luxury yacht in the U.S. Virgin Islands. New details emerge on the case that made international headlines and left investigators with more questions than answers. Andrea Canning reports

When a Colorado mother Suzanne Morphew vanishes on Mother's Day in 2020, investigators are left with minimal clues until a recording device exposes a potential motive. New details emerge from exclusive interviews with insiders close to the case. Keith Morrison reports.

A Connecticut mother speaks out about her fight to keep her assailant from walking free.

Investigating allegations against fashion mogul Peter Nygard, accused of sex trafficking dozens of women over several decades.

Drew Peterson speaks to Natalie Morales in his first on-camera interview in over a decade about the murder of his ex-wife, Kathleen Savio, and the disappearance of his fourth wife, Stacy.

Investigators desperately search for a killer after Florida teacher Denise Hallowell is found murdered. Dennis Murphy reports.

After a 27-year-old woman (Egypt Covington) is found murdered in her Michigan home, investigators quickly identify a person of interest, but years pass without an arrest. Andrea Canning reports.

A man goes overboard on a romantic sunrise cruise with his wife on Lake Coeur d'Alene in Idaho. Investigators begin to think his death may not have been an accident. Insiders close to Lori Isenberg are speaking out for the first time on television after she was convicted earlier this year of murdering her husband Larry Isenberg. The case gained national attention after Isenberg claimed Larry had died in a boat accident. Keith Morrison reports.

A triple murder divides a small town in Kentucky. As secrets come tumbling out, residents begin to wonder: How well do we really know our neighbors? Keith Morrison reports.

On the morning of September 11th, 2001, 40 men and women boarded a flight at Newark Airport bound for San Francisco. They were businessmen and women, retirees going on vacation, students headed home to school. Ordinary people on what seemed like an everyday flight. But the passengers and crew of United 93 would soon become part of the worst terrorist attack in American history. And their actions that day, banding together to fight the terrorists, would inspire the nation.

Our first full report on this incredible story aired in early October 2001. With the country still reeling from the 9/11 attacks, family members introduced us to the heroes of Flight 93. They recounted heartbreaking final phone calls home and the discovery of goodbye messages on answering machines. And they told a story of impossible bravery: how the passengers and crew took a vote and tried to take back the cockpit from the four hijackers in the face of almost certain death.

It's been 20 years since United 93 went down in a Pennsylvania field. This past summer we met up with some of those families again. They told us how they remember that awful day and how they've coped with their loss. They also brought us up to date on their lives today, 20 years later. It's a story of remarkable resilience.

Lester Holt reports on how the investigation into the murder of four-year-old Barbara Jean Horn revealed decades of misconduct across Philadelphia's criminal justice system.

After a mother and son are found dead, it takes nearly a decade to unravel the case. Andrea Canning reports the latest, including how a second investigation led to a new and unexpected arrest.

When Kansas prisoner John Manard escapes with the help of Toby Dorr, a 48-year-old prison volunteer and mother of two, investigators scramble to track the pair down;

A wealthy surgeon's whereabouts remain unknown for years after he disappears on vacation in Greece, leaving behind his wife, financial ruin and mounting malpractice suits. Rob Stafford reports.

Correspondent Keith Morrison reports on the case of a horror film actress, accused of murder in a real-life plot twist.

When Kathleen Schroll makes a phone call that names her killer right before her death, it leads to the arrest of a father for murder. But two trials and 12 years later, authorities begin to wonder if he was the victim, not the villain.

Exclusive new interviews and details on the deaths surrounding Chad and Lori Vallow Daybell, a case Keith Morrison has been on since it drew national attention after Lori's children disappeared.

Amateur internet investigators, new DNA technology and a dogged investigator help police find a killer – and identify a victim for years known only as 'Lavender Doe.' Keith Morrison reports.

The parents of missing South Carolina woman Heather Elvis, Debbi and Terry Elvis, open up to Andrea Canning about the search for their daughter.

When Susan Woods doesn't show up for work, she is soon discovered dead in her bathtub; as police search for answers, they find a trail of victims.

Professional basketball player Lorenzen Wright goes missing in 2010 and is found dead ten days later; Lorenzen's mother insists she knows who murdered her son and is relentless in helping detectives solve his case.

A massive manhunt ensues after Lois Riess murders her husband in Minnesota and flees to Florida, where she kills and steals the identity of a woman she had just met.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if Ron's interest in an alternative religion is connected to his murder.

A romantic Mediterranean cruise intended to rekindle the love between a woman and her ex-husband leads to her vanishing; the investigation reveals secret recordings, a surprising star witness and an undercover hit man.

More than two decades since the tragic death of Princess Diana, Dateline reveals new insights into the real story of the very private royal, including a look at Diana's troubled marriage, her turbulent life in the royal family and the investigation into her death. With the rise in popularity of The Crown, Andrea Canning reports on how much of it is true and what was really happening behind the palace gates.

A woman is shot to death in her bed while her husband and daughter are home. When police rule out robbery, they are left wondering who would want to kill Jan? Keith Morrison reports.

After Todd Chance is murdered, police follow a trail of video evidence as they work to track down his killer. Andrea Canning reports.

When pediatric dentist Kendra Hatcher is found dead in Dallas, Texas, police uncover a complex plot that leads them on an international manhunt. Keith Morrison reports.

After a fight with her mother, Angela, Ellie Green stays with her boyfriend's family until things settle down at home. But when days go by with no word from her mom, Ellie begins to worry. Then she's given the awful news: her mother is dead.

When a small town Alabama resident is murdered in his home, rumours involving a local pastor begin to swirl as the truth ends up turning the community upside down.

An Arkansas realtor goes missing after showing a house. When loved ones later receive mysterious text messages from her, they know something isn't right. Andrea Canning reports.

When a doctor is found murdered, investigators are stumped as to who would want him dead. Police discover simmering jealousies and a love triangle. Andrea Canning has the latest developments.

A young woman survives a brutal attack and detectives work tirelessly to find a suspect. But when they finally do, the victim is convinced they have the wrong man. Keith Morrison reports.

A suspicious house fire in Ohio sparks an investigation into a supposed suicide 24 years earlier. Josh Mankiewicz reports.

International celebrity Oscar Pistorius shoots and kills his girlfriend. When police arrive he says he acted in self-defense, as he believed he was firing at an intruder. Keith Morrison reports.

Police suspect natural causes as they investigate a man's death, until they they uncover a love triangle that turns the tragedy into a tangled mystery. Andrea Canning reports.

A 19-year-old disappears after a night out with her friends. Months later, when another woman survives a brutal attack, it becomes clear that the two cases are connected. Keith Morrison reports.

A man calls 911 after his estranged wife is found unconscious in the bathtub. Soon after the mysterious death, loved ones suspect what happened was no accident. Andrea Canning reports.

A successful businesswoman and mother of three is found shot in her office; the investigation into her death leaves a family divided. Keith Morrison reports.

A tight-knit Long Island family goes to extraordinary lengths to find their missing sister. Andrea Canning reports.

Exclusive interviews with close family members of Lori Vallow, the Idaho mother charged with deserting her children, Tylee and JJ, who have not been seen since September. Keith Morrison reports.

A former FBI agent is murdered at his house, and as police dig into his past, they begin to think the key to solving the mystery might be quite close to home. Josh Mankiewicz reports.

When Dr. Teresa Sievers is found murdered in her kitchen, detectives struggle to find any leads until an unexpected tip changes everything. Dennis Murphy reports.

Three siblings' lives change when their father is taken hostage in an orchestrated abduction. For the first time, they open up to Keith Morrison about their ordeal and its stunning conclusion.

A fugitive steals millions of dollars by conning numerous women and businesses over 25 years. Will law enforcement finally be able to catch him? Andrea Canning reports.

When grad student Katie Sepich is murdered, her killer leaves behind his DNA. The Sepich family fights for both justice and to get the law on DNA collection changed. Josh Mankiewicz reports.

Family members and the lead investigators who cracked the Kelsey Berreth case speak out for the first time and take Andrea Canning inside the murder investigation.

A glimpse of a sobbing woman lighting black candles is seared into a 9-year-old girl's memory. Decades later that girl reveals what she saw, heating up a long-cold case. Keith Morrison reports.

Hiker Meredith Emerson goes missing on Georgia's Blood Mountain on New Year's Day 2008. Could her disappearance be linked to two cases with similar circumstances? Dennis Murphy reports.

The man convicted of murdering California entrepreneur Chris Smith speaks out.

More than two decades after a woman is murdered in what appears to be a burglary gone wrong, a detective finds information that unlocks the mystery of what actually happened.

A California woman's two former husbands are mysteriously murdered, nearly 20 years apart.

Years after a Montana man is found dead, his son opens up a box of case files to find out what really happened.

A double homicide in upstate New York leads detectives on a cross country investigation to piece together a case with a surprising suspect at the center. Dennis Murphy reports.

The murder of a woman sets off a chain of events, leaving one man dead, another man implicated and a diabolical scheme exposed.

The search for MacKenzie Lueck, a college student who vanished from a park in Salt Lake City.

Lester Holt spends two nights embedded inside the largest maximum security prison in America, the notorious Louisiana State Penitentiary, also known as Angola.

Video of Robert Durst's friends testifying for the prosecution as to why he might have killed his best friend; a close friend of Durst's opens up about being called to testify against Durst after years of supporting him.

A San Diego woman arrives at an emergency room, near death. Doctors, the FBI and local law enforcement must solve not only a medical mystery, but also a horrific crime. Natalie Morales reports.

Cornell student and star athlete Charlie Tan excels in everything. But when he gets caught in the middle of a murder investigation, the community is left in shock.

A mother has suspicions about the sudden death of her son in college, which was ruled an accidental overdose.

College senior Reagan Tokes was just months away from graduation when she was shot and killed in a public park. Her parents' heartbreak soon turned to outrage. Andrea Canning reports.

A successful business woman and mother of three is found shot in her office. Will justice be served? Keith Morrison reports.

After a studious University of Utah athlete is found murdered on campus, it is revealed that she had reached out to the campus police for help multiple times before her death.

The murder of a young schoolteacher in Pennsylvania goes unsolved for years, but investigators discover a new tool that may finally help unlock the murderer's identity.

The discovery of a 19-year-old's car abandoned on a bridge in New Jersey turns into a missing person case that evolves into a monthslong homicide investigation; police discover a plot involving money, close friends and a fatal betrayal.

A Connecticut bank executive is targeted by a crew of criminals who invade his home, take him and his mother hostage and order him to rob his own bank. 

An Alabama teen's father calls the police after he returns home to find his son had thrown a party, leaving the place trashed. Just 11 minutes after the deputy leaves their house, there is another 911 call placed.

Two young girls in Washington are snatched in broad daylight while riding their bikes. The case goes unsolved for decades, until a new detective with a local connection to the story tries to solve the mystery that haunted her childhood.

A young woman finds out that her boyfriend might have shot and killed a college football player out of revenge. She struggles with coming forward to officials, fearing she could lose her life. Keith Morrison reports.

The case of Patrick Frazee, who is accused of murdering his fiancée Kelsey Berreth in November 2018, is examined. Included: remarks from Frazee's former girlfriend Vanessa Curie and her mother, Georgia.

The case of Mike Williams, who disappeared after duck hunting in North Florida on his sixth wedding anniversary, is examined.

Lead detectives and family members speak about the case of teenager Michelle Carter, who was convicted of bullying her then-boyfriend to kill himself.

A mother of two mysteriously vanishes from her parents' home in Michigan while going to check the mailbox, leaving her phone and identification behind. Police declare her dead before they even find her body. The disappearance and complicated investigation takes years for detectives to unravel.

Kate Snow interviews an undercover agent who spearheaded the international manhunt for former journalist Amanda Lindhout's kidnapper.

When a hard-charging boss in Arizona is shot to death, police uncover a complex web of bruised egos in his professional life and a trail of broken hearts in his personal life. Josh Mankiewicz reports.

When two tragic deaths occur within one week of each other in a wealthy area in California, families begin to wonder what happened inside a beachfront mansion. Josh Mankiewicz reports.

A young woman's murder remains unsolved until someone comes forward to reveal her own harrowing story. Keith Morrison reports.

A pilot flees after a deadly plane crash, and becomes a fugitive living a double life for decades. He tells his story for the first time to Keith Morrison.

When a beloved teacher and former beauty queen goes missing in Georgia, it triggers a decade-long investigation that makes national headlines. Andrea Canning reports

Keith Morrison reports on a notorious serial killer, nicknamed Hannibal, who murdered several people while working as a confidential informant for the FBI.

When a soldier who just returned from Afghanistan is gunned down on the side of the road in Kentucky; detectives quickly uncover a secret that could solve the case.

In-depth look at the growing homeless epidemic affecting half a million Americans, including an eye-opening tour of L.A.'s Skid Row, the nation's epicenter of homelessness. Craig Melvin reports.

Stories from the streets of Hollywood, including an interview with producer Jason Blum about how he is revamping the horror genre; Jamie Lee Curtis, Jordan Peele and Octavia Spencer discuss what it is like to work with Blum.

A beloved former firefighter is found dead in his garage; a neighbor's home security camera may provide answers.

A popular high school student is found murdered in her bed; two students help police solve the case.

A husband convicted of murdering his wife is granted parole; others fear he may kill again.

The reality of life along the U.S.-Mexico border, including interviews with families seeking asylum, news on the controversial policy of separating migrant families, and fact checks on claims made by both political parties.

A woman's DNA test sends her father halfway around the world to confront his past.

A recent law school graduate in Georgia who has a promising future disappears without a trace.

Interview with Andrea Constand, the first woman to pursue charges against Bill Cosby, and four other Cosby accusers who testified against him.

In a suburb of Toronto, a family lives in fear as one relative after another is found dead over the years in the same house.

Rapper Meek Mill interview; exploring controversies surrounding the criminal justice system, including the parole system, wrongful convictions, challenges faced by law enforcement, alleged police abuse and more.

When one woman breaks off her relationship with a boyfriend she says abused and stalked her, he moves on to something even worse.

Former gymnastics team coordinators Bela and Martha Karolyi and Olympic gold medalist McKayla Maroney talk exclusively to Savannah Guthrie about the biggest sex abuse scandal in Olympic history.

Four families that barely escaped the catastrophic Montecito, Calif., mudslides alive, and the rescuers who risked their own lives to help.

When a young Florida law professor is shot, baffling his family, friends and police, a complicated investigation leads police to a surprising theory of the crime; the victim's family speaks out for the first time.

A complicated Texas love triangle ends in murder. Apink gun leads to an arrest, until new evidence prompts investigators to rethink the case.

A former marine who may have let his desire to help go too far.

When a young mother disappears after leaving her infant in the care of her local pastor and his wife, Florida detectives search for her for five years, uncovering a web of secrets and lies.

The mysterious death of a young mother in Ohio and the ensuing investigation that spans years and multiple states.

A look at the case of con man John Meehan, including interviews with his wife and her daughter, his ex-wife, law enforcement officers, and the Los Angeles Times reporter who shined a spotlight on the story.

An anonymous letter leads authorities investigating the poisoning death of a chiropractor to an unlikely suspect.

An investigation of a woman found murdered in Fort Worth, Texas.

A young father's murder at work leads investigators to deep secrets about sex, friendship, religion and family.

As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.

When a mother of four dies unexpectedly on Valentine's Day, her death is attributed to natural causes, but a detective suspects that someone murdered the woman.

When a father goes missing and his body is found in a field several miles away, the investigation reveals multiple suspects -- including members of his own family.

A luxury car salesman is asked by a beautiful former client to plan a murder.

Kate Snow speaks with two families about their unforgettable stories of surviving the 2013 Westgate Mall terrorist attack in Kenya.

When a beloved firefighter is murdered just outside Sarasota, Fla., investigators discover a twisted tale of secrets, lies and infidelity. Andrea Canning reports.

An in-depth interview with Charles Manson's former parole officer; rarely seen video of Manson; interviews with victims' family members, and others close to the case.

The battle between a wife and a mistress for the heart of one man leads to a deadly car chase. Andrea Canning reports.

A woman continues searching for answers after the investigation into her daughter's murder goes cold.

When a man in San Antonio shoots his wife in the dark of the early morning, he says he mistook her for an intruder.

The murder of a woman in Saco, Maine, leads police to a complex investigation that spans three states.

A woman comes forward with the truth about the deaths of three other women, solving a 17-year-old mystery; interviews with two people at the center of the case.

Princess Diana's troubled marriage, life in the monarchy, love affairs and tragic death; interviews with former bodyguard Ken Warfe, Paris police chief Martine Monteil, forensic scientist Patrick Touron, former French diplomat Sami Nair, and others.