The investigation into the poisoning death of a Wisconsin mother takes a surprising turn when detectives learn she wrote a letter just days before her death pointing to a possible suspect. Andrea Canning reports.

As a bonus for you, we’re sharing the trailer for Mortal Sin, an all-new original podcast series from Dateline. Dawn and Nick Hacheney are the perfect couple: spiritual, loving, and devoted to the church where Nick is a pastor. When Dawn is killed in a house fire the day after Christmas, the pastor and his flock are devastated. What few knew at the time was the dark prophecy that foretold it... Follow now to get the first two episodes on December 5th completely free, or you can subscribe to Dateline Premium on Apple Podcasts to start listening now, ad-free: https://link.chtbl.com/mtlsin_fdtw

When an Illinois high schooler vanishes, her mother finds a note saying she ran away. But a grisly discovery made years later changes the course of the investigation. Andrea Canning reports.

Josh Mankiewicz talks with South Carolina natives Craig Melvin and producer Carol Gable about their recent episode, “The Murdaugh Murders: Inside the Investigation.” Craig reveals why state investigators agreed to sit down with Dateline to discuss the case, and talks about what it’s been like to be back reporting in his home state on such a high-profile story.

Lead detectives speak out about the investigation into once-prominent South Carolina attorney Alex Murdaugh, who was convicted of murdering his wife, Maggie, and son Paul. Craig Melvin reports.

Josh Mankiewicz and Andrea Canning discuss Andrea’s recent episode, “The Hunt for the Gilgo Beach Killer.” In July 2023, architect Rex Heuermann was charged with the murders of three women whose bodies were found on Long Island’s Gilgo Beach 13 years earlier. Andrea tells Josh what made this episode different from others she’s worked on, and reveals additional details about the investigation and Heuermann, who has pleaded not guilty to all charges.

Andrea Canning sits down with family members and key insiders connected to the investigation of the murders of several women found dead along Gilgo Beach in Long Island, New York.

Josh Mankiewicz and Keith Morrison discuss Keith’s recent episode, “The Case of the Man with No Name.” The story takes Keith back to his homeland to report on the mysterious disappearance and murder of a Canadian man and the international manhunt to track down his elusive killer and bring him to justice. Keith talks about his upbringing in Canada…and you’ll learn the answer to the age-old question: has Keith ever been on a jet ski?

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

A small town in the Ohio River Valley is left in shock after beloved local coal miner Brad McGarry is found fatally shot in the basement of his home. As investigators dig into his personal life, a secret affair reveals a surprising suspect. Dennis Murphy reports.

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. Keith Morrison reports.

Josh Mankiewicz and Blayne Alexander take us behind the scenes of Blayne’s recent episode, “65 Seconds.” The story chronicles the 13-year investigation into the murder of Heidi Firkus in her St. Paul, Minnesota home. Blayne and Josh discuss the unexpected twists in the case and Blayne’s experience reporting the story for Dateline.

After an apparent home invasion leaves 25-year-old Heidi Firkus dead and her husband Nick hospitalized, detectives learn the young couple was facing financial troubles. Blayne Alexander reports.

Josh Mankiewicz and Andrea Canning give us an inside look at Andrea’s recent episode, “The Footprint at the Lake.” The story is about Manuela Allen, a beloved teacher who disappeared from her Olney, Texas, home and was later found dead at a nearby lake. In their conversation, Josh and Andrea discuss the details of the case and go behind the scenes of the making of the episode.

After a teacher vanishes from her home and police make a gruesome discovery at a lake, investigators in a small Texas town are left with more questions than answers. Andrea Canning reports.

Josh and Dennis take us behind the scenes of Dennis’s recent episode “The Clearing.” The story is about the mysterious death of Ohio woman Emily Noble. After a monthslong search, Emily’s body was found in the woods near her home. Was it murder or suicide? In their conversation, Dennis and Josh discuss the puzzling details surrounding Emily’s death and Dennis’s interview with Emily’s husband, Matt. If you or someone you know is in crisis, call the Suicide & Crisis Lifeline at 988 or visit 988lifeline.org for more resources.

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. Dennis Murphy reports about the case that rocked a small Ohio town. If you or someone you know is in crisis, call the Suicide & Crisis Lifeline at 988 or visit 988lifeline.org for more resources.

Andrea and Josh take you behind the scenes of Josh’s recently aired “Losing Faith” episode about the murder of Jamie Faith, a Dallas man who was shot to death in broad daylight while he and his wife were taking their dog for her morning walk. In their conversation, Andrea and Josh share their insights about the case and reveal details you haven’t heard.

Josh Mankiewicz reports on the fatal shooting of Jamie Faith, who was brazenly gunned down while he and his wife were taking their dog for her morning walk outside their Dallas home.

The new season is upon us! New mysteries, extra episodes, new original podcasts and a big reveal… Josh Mankiewicz sits down with Andrea Canning, Dennis Murphy, and Keith Morrison ahead of our season premiere on Friday, September 29 at 9/8c to dish all things Dateline.