Josh Mankiewicz reports on the mysterious disappearance of a Colorado rancher.

The survivor of a horrible attack is convinced police have the wrong suspect.

Dennis Murphy has the latest on the case of a Florida law professor murdered in his garage, including new details, newly-released evidence and bombshell testimony from a long-awaited trial.

After filming wraps on an indie horror movie, the cast members learn that their lead actress is not who she says she is and has been charged with killing her uncle.

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 mother of two goes missing in Monrovia, California. As detectives investigate, the woman's friends and family reveal that she feared she was being stalked. Josh Mankiewicz reports.

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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 college student Helene Pruszynski is found murdered, her case remains cold for nearly 40 years until a new detective uses an innovative method to catch the killer. Josh Mankiewicz reports.

In Morris, Alabama, faith is a way of life. But when a man is murdered, rumors involving a pastor begin to swirl and the truth ends up turning the community upside down. Andrea Canning reports.

When a woman dies after what appears to be an accidental fall in the shower, two friends join forces to seek justice on her behalf. Andrea Canning reports.

After Ellie Green doesn't hear from her mother for a few days following an argument, she begins to worry. Then she learns her mother is dead. But is that the truth? Keith Morrison reports.

When Ohio resident Pat Sabo is offered $50,000 to kill someone hundreds of miles away, he calls the police to report the incident; acting quickly, investigators set up an elaborate sting operation to bring down those behind the murder-for-hire plot;

When a pediatric dentist is found dead, police uncovers a complex plot and their suspect leads investigators on an international manhunt; the lead detective speaks out for the first time;

When a soldier, Vannessa, vanishes from Fort Hood, her family do everything they can to bring attention to her disappearance; Secretary of the Army Ryan McCarthy speaks about the investigation and allegations of sexual assault in the military;

After Todd Chance is murdered, police follow a trial video evidence as they work to track down the killer;

Top executives at Pfizer, Moderna, and Johnson and Johnson talk about plans for COVID-19 vaccine distribution and efforts to overcome public mistrust; interviews with key advisors from President Donald Trump and President-Elect Joe Biden's COVID-19 task forces;

A 40-year-old Minnesota woman is shot to death in her bed, while her husband and teenage daughter are home, leaving investigators to wonder who would want her dead;

The latest in the case of a missing young Oregon woman, whose disappearance led to an intense manhunt, after a suspect embarked on a two-state crime spree;

More than 2 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;

The families of George Floyd, Jacob Blake Jr, and Eric Garner open up together in a raw and emotional conversation about their pain, anger, and frustration over police violence;

The deadly shooting at U.S. District Court Judge Esther Salas’ home that left her husband Mark injured and their son Daniel dead.

Keith Morrison has the latest developments in the case of a 21-year-old UCLA student, whose body was found in an infamous Los Angeles area train tunnel in 1990.

When University of Utah athlete Lauren McCluskey is found murdered on campus, investigators learn that she had reached out to the campus police for help multiple times before her death. Josh Mankiewicz reports on the latest significant changes and consequences the school is facing.

A nationwide manhunt is launched after a woman dubbed the “killer grandma” goes on the run through the Gulf Coast. Dennis Murphy reports.

A college student goes missing in broad daylight from her off-campus job. As police begin to investigate, they receive a mysterious phone call that changes everything.

Popular basketball player Lorenzen Wright is found murdered in 2010. His mother insists she knows who murdered her son and is relentless in her pursuit of justice. Andrea Canning reports.

A coroner arrives at the scene of a car wreck to find a woman dead. He becomes suspicious when he notices unusual markings on her face. Was her death really an accident? Andrea Canning reports.

When the owner of a school promoted as a place to help troubled girls is accused of abusing students, his daughter must decide whose side she’s on. Keith Morrison reports.

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. Natalie Morales reports.

Former NXIVM member Dr. Danielle Roberts defends branding members of the alleged sex cult; former members India Oxenberg and her mother, Catherine Oxenberg, open up about how they are doing, after the group's founder is convicted of felonies.

In an attempt to move on from a tumultuous love triangle, South Carolina native Heather Elvis goes out on a first date on December 17, 2013. After returning home, she calls her friend Brianna. Heather is never seen or heard from again.

Witnesses see a woman handcuffed in a parking lot and taken into an unmarked car by a blond woman. But detectives can't find any record of an arrest. Where could she be? Josh Mankiewicz reports.

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."

Lead detectives in the murder investigation of University of Utah student MacKenzie Lueck speak exclusively to Keith Morrison about the case that made national headlines.

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.

When a woman is murdered, a web of sex and lies is uncovered, revealing a prominent family’s dark secrets. Detectives and an FBI informant tell Dennis Murphy about the case for the first time. Update of Secrets in the Suburbs (S20E45).

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.