“The Mushroom Mystery”: Dateline NBC Reports on David Fouts Homicide July 24 2026

Dateline NBC examines one of the most unusual homicide investigations ever prosecuted in Indiana with “The Mushroom Mystery,” airing Friday, July 24, 2026, at 10/9c. Reported by Blayne Alexander, the two-hour broadcast follows the investigation into the 2020 death of David Fouts, a Pendleton, Indiana, man whose body was discovered in a roadside ditch after investigators uncovered an extraordinary forensic clue: poisonous mushrooms in his stomach.

What began as a baffling unexplained death soon developed into a murder conspiracy case involving forensic pathology, digital evidence, witness testimony and an alleged plot to kill David using one of nature’s deadliest toxins. The investigation ultimately led prosecutors to accuse David’s wife, Katrina Fouts, of orchestrating the killing with the help of a longtime family acquaintance, creating a case that investigators described as unlike any they had previously encountered.

• Who Was David Fouts & What Happened to Him? 2026 Update & Profile
• Who Is Katrina Fouts & Where Is She Now? 2026 Update & Profile
• Who Was Terry Hopkins & Where Is He Now? 2026 Update & Profile

David Fouts Was Found Dead Beside a Rural Indiana Road

On the morning of April 24, 2020, a passerby discovered the body of 50-year-old David Michael Fouts in a ditch along Overdorf Road near Noblesville in Hamilton County, Indiana. David, known by friends as an avid cyclist and fitness enthusiast, appeared to have suffered significant physical trauma before his death.

Investigators arriving at the scene immediately recognized that the circumstances were suspicious. David’s pockets had been turned inside out, while his wallet, cell phone and identification were missing. Detectives also documented bruising across his body, along with residue consistent with duct tape around his wrists and ankles. Cuts on his hands suggested he had struggled before he died.

The scene initially raised questions about whether David had been robbed, assaulted or killed elsewhere before being dumped in the roadside ditch. With few immediate answers, investigators turned to forensic evidence to determine exactly how he had died.

At the same time, detectives began reconstructing David’s final days. They learned that despite his disappearance, no missing person report had been filed for several days, a detail that would later become significant as investigators examined those closest to him.

An Extraordinary Autopsy Revealed Poisonous Mushrooms

David’s autopsy produced one of the most unusual findings many investigators had ever encountered. Standard toxicology testing failed to identify a conventional poison or drug that explained his death, prompting forensic pathologists to conduct a more detailed examination of his stomach contents.

That examination uncovered seven pieces of poisonous mushrooms identified as Lyophyllum connatum, commonly known as the white domecap. Experts explained that the mushrooms contain muscarine, a naturally occurring toxin capable of causing severe sweating, excessive salivation, dangerously slow heart rate, breathing problems and, in sufficient quantities, death.

The discovery immediately changed the direction of the investigation. While accidental mushroom poisonings occur from time to time, detectives questioned how an experienced adult with no known history of foraging had ingested a deadly species.

The case also presented a significant scientific challenge. Purdue University mycology expert Dr. Mary Catherine Aime and other specialists explained that muscarine has a relatively short half-life and can disappear from the bloodstream within days. Because of this, the poison no longer appeared during routine toxicology screening, making the examination of David’s stomach contents essential to identifying what had happened.

Detectives Focused on David’s Personal Relationships

As investigators explored David’s personal life, attention shifted toward his wife, Katrina Fouts. Detectives later testified that they became concerned by what they described as inconsistencies in her statements and her actions following David’s disappearance.

Search warrants executed during the investigation uncovered items prosecutors later described as consistent with planning a violent crime, including knives, zip ties, tools and a tarp. Digital forensic specialists also recovered a deleted screenshot from Katrina’s phone containing information about poisonous mushrooms, evidence prosecutors argued demonstrated prior research into lethal fungi.

The investigation expanded further as detectives examined communications and relationships involving the Fouts family. DNA recovered from David’s clothing ultimately linked investigators to Terry Hopkins, a former Richmond police officer who had been working as a caretaker for Katrina’s father.

Hopkins soon emerged as the alleged accomplice in what prosecutors described as a carefully planned murder conspiracy. Investigators alleged that rather than acting alone, Katrina had enlisted Hopkins to help carry out the killing and dispose of David’s body.

Investigators Reconstructed an Alleged Murder Plot

According to prosecutors, the conspiracy began with David unknowingly consuming poisonous mushrooms that had been prepared for him. As the toxin began affecting his body, investigators alleged that Hopkins entered the home after receiving a signal from Katrina.

Authorities alleged that when David became ill and struggled to breathe, Hopkins physically attacked him. Prosecutors argued that Hopkins choked David during the confrontation before he died.

Investigators further alleged that Katrina and Hopkins then wrapped David’s body, restrained his limbs and transported him to Hamilton County, where they abandoned him in the roadside ditch where he would later be discovered.

A major development occurred before trial when Hopkins, who was terminally ill, gave investigators a confession outlining the alleged conspiracy. According to law enforcement, Hopkins admitted participating in the killing and described the sequence of events that prosecutors later presented during Katrina’s trial. Hopkins died of natural causes before he could stand trial, meaning a jury never heard evidence against him in a criminal proceeding.

Digital Evidence and Forensic Science Became Central to the Case

Because direct eyewitness testimony was limited, prosecutors relied heavily on scientific evidence and digital records to build their case.

The mushroom evidence remained the most distinctive feature of the prosecution. Mycologists explained to jurors how the poisonous fungi affected the human body and why routine toxicology testing initially failed to detect the toxin. Their testimony helped explain why investigators had initially struggled to determine David’s cause of death.

Digital evidence also became increasingly important. Prosecutors pointed to deleted material recovered from Katrina’s phone, including information about poisonous mushrooms, as evidence of planning rather than accident.

Investigators also examined phone records, DNA evidence and witness statements to establish communication between Katrina and Hopkins before David’s death. Combined with the physical evidence recovered during searches, prosecutors argued that the evidence demonstrated an intentional conspiracy rather than an isolated act.

The Jury Reached a Split Verdict

Katrina Fouts stood trial in Hamilton County in 2022 on multiple felony charges arising from David’s death. Throughout the proceedings, prosecutors argued that the evidence showed she planned the killing with Hopkins, while the defense challenged the state’s interpretation of the forensic and circumstantial evidence.

After deliberations, the jury returned a split verdict. Katrina was acquitted of the murder charge but convicted of conspiracy to commit murder and failure to report human remains.

The distinction reflected the jury’s conclusion that prosecutors had proven she participated in planning the killing, even though jurors did not find her guilty of murder itself under Indiana law.

During sentencing, the court imposed an aggregate prison sentence of 34 years. The sentence effectively concluded the criminal prosecution following Hopkins’ death before trial, although questions surrounding his exact role were never tested before a jury because he died before criminal proceedings against him could be completed.

Appeals Failed to Overturn the Conviction

Following her conviction, Katrina appealed the verdict, challenging several aspects of the trial. Among the issues raised was the admission of a statement she made during an interview with investigators after a detective confronted her about David’s death.

The Indiana Court of Appeals reviewed the arguments but ultimately rejected her claims, concluding that the challenged evidence had been properly admitted and that sufficient evidence supported the jury’s verdict.

The appellate court upheld both her conspiracy conviction and her conviction for failure to report human remains, leaving her 34-year sentence intact.

The appeals process marked the final major legal chapter in one of Indiana’s most unusual homicide prosecutions, a case remembered for combining forensic botany, digital evidence and traditional detective work to solve what initially appeared to be an unexplained death.

Dateline Explores the Science Behind the Investigation

In “The Mushroom Mystery,” Dateline NBC revisits the investigation through interviews with detectives, witnesses and forensic experts who helped solve the case.

Among those featured is Purdue University mycology professor Dr. Mary Catherine Aime, who explains how investigators identified the poisonous mushrooms and why the toxin proved so difficult to detect using conventional forensic testing. Her analysis illustrates how scientific expertise became essential in transforming a mysterious death into a homicide investigation.

The broadcast also includes interviews with Jennie Thomas, who discovered David’s body, along with friends Matt Tanner and Chris Tanner, who reflect on David’s life and the lasting impact of his death.

By combining firsthand accounts, courtroom evidence and scientific analysis, Dateline reconstructs an investigation that investigators believe represents one of the only known intentional homicides involving this specific poisonous mushroom, making the David Fouts case one of the most distinctive murder investigations ever prosecuted in Indiana.

More “The Mushroom Mystery”

• “The Mushroom Mystery”: Dateline NBC Reports on David Fouts Homicide July 24 2026
• Who Was David Fouts & What Happened to Him? 2026 Update & Profile
• Who Is Katrina Fouts & Where Is She Now? 2026 Update & Profile
• Who Was Terry Hopkins & Where Is He Now? 2026 Update & Profile