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“Road Map to Murder”: 20/20 Revisits Bart & Krista Halderson Homicides June 26 2026

by · June 25, 2026

ABC’s 20/20 revisits the Halderson family murders in “Road Map to Murder,” a two-hour rebroadcast airing Friday, June 26, 2026, at 9:00 p.m. ET on ABC and streaming the next day on Disney+ and Hulu. Reported by ABC News contributor and ESPN analyst Ryan Smith, the episode examines how a missing persons case in Windsor, Wisconsin, became a double murder investigation centered on lies, digital evidence and the collapse of a fabricated life.

The special focuses on the murders of Bart and Krista Halderson, a married couple whose disappearance over the Fourth of July holiday weekend in 2021 stunned their community. Their son, Chandler Halderson, first presented himself as a worried child reporting his parents missing. Within days, investigators concluded he was not a witness to the mystery, but the person responsible for creating it.

A Missing Persons Report That Raised Immediate Questions

Bart and Krista Halderson lived in Windsor, Wisconsin, a village near Madison. They were described by relatives and friends as devoted parents who had worked hard to provide a stable home for their two sons, Mitchell and Chandler. Bart was known as practical and careful with money, while Krista was remembered as warm, generous and deeply invested in her family.

On July 7, 2021, Chandler Halderson reported that his parents were missing. He told authorities that Bart and Krista had left for the family cabin in Langlade County with another couple. He also suggested they may have gone to a casino or travelled for the holiday weekend. The account placed Bart and Krista away from home, outside regular contact and in the company of people Chandler could not identify.

Detectives found problems with the story from the beginning. Bart and Krista’s vehicles were still at the house. Their supposed trip to the cabin did not match what family members knew about their habits. When relatives and law enforcement checked the cabin, there were no signs that anyone had been there.

Chandler Halderson’s Story Begins To Collapse

As investigators questioned Chandler, his version of events changed. He claimed his parents had gone north to deal with a plumbing issue at the cabin and that he helped them pack tools. He also said they had been picked up by another couple, but he could not provide information that allowed detectives to confirm the story.

Friends and family grew concerned before Chandler contacted law enforcement. Krista had missed work, and a coworker who tried to reach her received no response. When the coworker went to the Halderson home, Chandler repeated the cabin explanation.

Detectives began treating the disappearance as suspicious once they realized Chandler’s account was unsupported by physical evidence, witness statements and the couple’s known routines. What appeared at first to be a missing persons case began shifting toward a criminal investigation.

The Farm Discovery That Changed The Case

A major break came when a property owner near Cottage Grove reported seeing Chandler near a wooded area on her family’s farm. The location had a connection to Chandler’s girlfriend, Cathryn Mellender. Investigators searched the area and found human remains.

The remains were identified as Bart Halderson. Authorities also recovered cutting tools, including items found in an oil drum, and evidence that prosecutors later used to argue Bart had been dismembered after death. An autopsy determined Bart had been shot.

Chandler was arrested after investigators concluded he had provided false information during the missing persons investigation. The case then escalated from a disappearance to a homicide prosecution, with Krista still missing and investigators searching for evidence of what had happened to her.

Snapchat Evidence Leads Investigators To Krista

One of the most significant clues came from Snapchat. Cathryn Mellender gave investigators access to information from her phone, including evidence connected to Snapchat’s location-sharing feature, Snap Map. The data placed Chandler near the Wisconsin River on July 3, 2021.

That location mattered because it was familiar to Chandler and remote enough to serve as a dumping site. Investigators followed the lead and searched the area near Roxbury, Wisconsin. They found additional human remains, later identified as belonging to Krista Halderson.

Krista’s cause of death could not be determined from the remains recovered. Prosecutors argued, however, that she had been killed after Bart, as part of the same plan to conceal Chandler’s lies and prevent his parents from exposing the truth.

The False Life Behind The Murders

At trial, prosecutors presented Chandler as a young man who had built an elaborate false identity. He told his family he was attending Madison Area Technical College, pursuing an IT degree and preparing for a job at SpaceX in Florida. He also claimed to be connected to American Family Insurance.

Those claims were false. Chandler had failed out of college and was not on the path he described to his parents. Prosecutors said he created fake email accounts and fictional school contacts to keep the deception alive, including messages that appeared to explain why his transcripts were delayed.

Bart became suspicious after months of excuses. He began pressing Chandler for proof of his college status and contacted Madison College while trying to obtain transcript information. Prosecutors argued that this moment threatened to expose years of deception and gave Chandler a motive to kill.

Prosecutors’ Theory Of The Killings

The prosecution argued that Chandler killed Bart first after his father came close to discovering the truth about his education. Bart had planned to attend a meeting with Chandler connected to the transcript issue, but prosecutors said the meeting was another fiction.

According to the state’s theory, Chandler shot Bart at the family home with a rifle. Prosecutors then alleged he texted Krista, waited for her to return home and killed her as well. Investigators believed the killings occurred in the basement of the Halderson residence.

The state argued Chandler then dismembered his parents’ bodies, burned evidence in the fireplace and transported remains to different rural locations. The prosecution described the disposal efforts as part of a calculated attempt to mislead investigators and prolong the missing persons story.

Forensic Evidence Inside The Halderson Home

The evidence presented at trial included blood traces found in the basement, signs of cleanup and human bone fragments recovered from the fireplace. Forensic testimony connected the home to the killings and contradicted Chandler’s claim that his parents had left town.

Investigators also found evidence involving cutting tools, a tarp, ice purchases and items believed to have been used in the disposal of the bodies. The state linked these pieces to Chandler’s movements before and after the disappearances.

Surveillance footage and witness statements also played a role. Neighbors reported unusual activity, and camera footage helped establish timelines. Digital records, phone data and social media evidence allowed investigators to track Chandler’s movements across multiple locations.

The Trial And Defense Argument

Chandler Halderson went to trial in January 2022. He pleaded not guilty to all charges, including first-degree intentional homicide, mutilating corpses, hiding corpses and providing false information during a missing persons investigation.

The defense argued that the prosecution’s case was circumstantial. Chandler’s attorneys acknowledged that he had lied, but argued that lying about school and work did not prove he had killed his parents. Their position was that the state had built a theory from suspicion rather than direct proof.

Jurors rejected that argument. The prosecution’s case combined motive, forensic evidence, digital records, witness testimony and physical discoveries tied to Chandler’s movements. After deliberation, the jury found him guilty on all counts.

Conviction, Sentencing And Later Appeals

Chandler Halderson was convicted in 2022 of murdering Bart and Krista Halderson. He received life in prison without the possibility of parole. The sentence ensured he would spend the rest of his life incarcerated for the killings of his parents.

In April 2023, two lesser convictions related to hiding corpses were vacated because the court determined they were lesser-included offenses connected to the more serious mutilation convictions. The change did not affect Chandler’s life sentence.

Halderson later pursued appeals, including claims involving trial fairness and counsel effectiveness. In November 2025, the Wisconsin Court of Appeals affirmed the conviction. In June 2026, the Wisconsin Supreme Court declined to review the case, leaving the conviction and sentence intact.

Why The Case Remains Disturbing

The Halderson case continues to attract attention because of the contrast between the family’s public image and the violence uncovered by investigators. Bart and Krista were not strangers to their killer. They were Chandler’s parents, and prosecutors argued they were killed because they came close to exposing his lies.

The case also stands out for the role of digital evidence. Snapchat location data, cellphone records, surveillance footage and online communications helped investigators break through Chandler’s false story. A missing persons report became a map of movements, disposal sites and deception.

Road Map To Murder Revisits A Case Built On Lies

ABC’s “Road Map to Murder” revisits the investigation through interviews, case evidence and reporting from Ryan Smith. The episode examines how detectives moved from Chandler’s account of a holiday trip to the discovery of Bart and Krista’s remains in separate locations.

The 20/20 special also explores the emotional toll on those who knew Bart and Krista. Friends and relatives described them as loving parents who would have helped Chandler if he had admitted the truth. Instead, prosecutors said he chose violence to preserve a life built on deception.

“Road Map to Murder” is not only a true-crime reconstruction of a double homicide. It is a case study in how lies can grow until they consume the people closest to the person telling them. For Bart and Krista Halderson, the cost was their lives. For Chandler Halderson, the outcome was a life sentence with no possibility of parole.

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Ryan Gill

Ryan is a passionate follower of true crime television programs, reporting on and providing in-depth investigations on mysteries in the criminal world.

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