Overview

Last seen: November 16, 1996, at approximately 8:00 p.m.
Location: Bismarck, North Dakota, near the 1100 block of University Drive.
Missing: Sandra Mary “Sandy” Jacobson, 36, and her five-year-old son, John Henry Jacobson.

Sandra and John left the home of Sandra’s parents to buy gasoline and were expected to return. A receipt later confirmed that gasoline was purchased, but mother and son never came back. Sandra’s gray 1990 Honda Civic was discovered the following morning at Centennial Beach near the Missouri River. The driver’s door was open, the keys remained in the ignition, and Sandra’s purse was on the front seat. Neither Sandra nor John has ever been found.

Detailed Case Breakdown

Sandra Mary Jacobson and John Henry Jacobson: The 1996 Bismarck, North Dakota Disappearance

Brief Case Summary

Last seen: November 16, 1996, at approximately 8:00 p.m.
Location: Bismarck, North Dakota, near the 1100 block of University Drive.
Missing: Sandra Mary “Sandy” Jacobson, 36, and her five-year-old son, John Henry Jacobson.

Sandra and John left the home of Sandra’s parents to buy gasoline and were expected to return. A receipt later confirmed that gasoline was purchased, but mother and son never came back. Sandra’s gray 1990 Honda Civic was discovered the following morning at Centennial Beach near the Missouri River. The driver’s door was open, the keys remained in the ignition, and Sandra’s purse was on the front seat. Neither Sandra nor John has ever been found.

A Mother and Son Vanish in Bismarck

On the evening of November 16, 1996, Sandra Mary Jacobson and her five-year-old son, John Henry Jacobson, disappeared from Bismarck, North Dakota, leaving behind a case that remains unresolved nearly three decades later.

Sandra, commonly called Sandy, was 36 years old and was living in Center, North Dakota. She was the mother of two sons and had worked for the North Dakota Department of Transportation. That Saturday, Sandra and John traveled to Bismarck to have dinner with Sandra’s family.

Before arriving at her parents’ home, Sandra made an unusual telephone call to the Bismarck Police Department. She reported that she believed ritual abuse connected with satanic activity was occurring at a farm near Center. Accounts of the call state that Sandra sounded extremely upset. The claim was never established as fact, and it has generally been discussed by investigators in the context of concerns about Sandra’s mental state at the time.

The Final Hours

Sandra and John reached her parents’ residence near the 1100 block of University Drive at approximately 7:30 p.m. Family members were concerned by Sandra’s behavior, and her mother reportedly encouraged her to go to a hospital. Sandra agreed but said she first wanted to put gasoline in her Honda Civic.

At approximately 8:00 p.m., Sandra drove away with John. Investigators later found documentation confirming that she did, in fact, purchase gasoline after leaving the house. Sandra and John were expected to return, but they never did. Sandra’s mother reported them missing at approximately 10:00 p.m.

That confirmed gasoline purchase is important because it establishes that Sandra and John successfully reached another location after leaving the family residence. What happened after that stop has never been conclusively determined.

Sandra’s Car Is Found Beside the Missouri River

On the morning of November 17, 1996, Sandra’s gray 1990 Honda Civic was discovered at the Centennial Beach parking area along the Missouri River in Bismarck.

The scene was unusual. The driver’s door was standing open. The engine was off, but the keys were still in the ignition. Sandra’s purse remained inside the vehicle and appeared largely undisturbed. Later reporting based on the police file noted that Sandra’s state identification card was in the purse, while her driver’s license was missing.

Despite the vehicle’s proximity to the Missouri River, investigators reportedly did not find tracks in the snowy conditions showing Sandra or John walking from the car toward the water. Searchers nevertheless focused heavily on the river.

The Burleigh County Sheriff’s Department dive rescue and recovery team attempted to search the area, but ice, cold weather and strong currents made the operation difficult and prevented the type of thorough underwater search investigators wanted to conduct. No remains belonging to Sandra or John were recovered.

The River Theory — But No Conclusive Evidence

One early theory was that Sandra had entered the Missouri River with John during a period of severe emotional or psychological distress.

That possibility has never been conclusively established.

No bodies were recovered, and later investigators questioned whether the evidence actually demonstrated that Sandra and John entered the river at all. The absence of obvious tracks leading from the car toward the river became one of several details that complicated the original theory.

The case therefore cannot accurately be described as a confirmed murder-suicide, accidental drowning or homicide. Sandra and John remain missing, and multiple scenarios remain possible.

A Child’s Shoe Raises Questions

In the spring of 1997, a child’s shoe was recovered near the area where Sandra’s Honda had been found.

The discovery initially appeared potentially important. John’s father reportedly believed the shoe could have belonged to his son. Other members of John’s family, however, said it was much too large for the five-year-old. The shoe was never conclusively established as belonging to John.

The disputed shoe became another example of evidence that produced questions rather than answers.

Problems With the Original Investigation

The case eventually became inactive in the late 1990s, but it did not disappear permanently from investigators’ attention.

Years later, Bismarck Police Sgt. William Connor revisited the disappearance. Connor had participated in the original search as a canine handler and took a renewed interest in the case in 2004. A later police-file review found that important investigative opportunities from 1996 had either been missed or could no longer be reconstructed.

In 2022, Forum News Service investigative reporter Trisha Taurinskas obtained extensive access to the Bismarck Police case file for a multi-part investigation published through The Vault. The records showed that the original investigation left significant questions unresolved and that evidence investigators might have wanted later was no longer readily available.

For example, records indicate that Sandra’s automobile was released to her husband in December 1996. Police-file photographs and reporting also showed that investigators obtained records for Sandra’s car phone, while her home telephone records for the crucial month of November were not initially collected.

Those omissions matter because telephone records, vehicle evidence and information about Sandra’s personal contacts could potentially have helped establish who she communicated with immediately before disappearing.

Investigators Reconsider Sandra’s Husband

Sandra and John disappeared while Sandra was separated from John’s father, Alan Jacobson.

The later reinvestigation examined Alan more closely than investigators apparently had during the earliest stage of the case. Forum News Service reported that detectives explored the possibility of foul play, examined telephone and insurance information and asked increasingly detailed questions regarding Sandra’s marriage and circumstances before the disappearance.

Police records included a letter from one of Alan’s coworkers stating that Alan was with him on a work trip when Sandra and John disappeared. Records also indicate that Alan returned to North Dakota after learning his wife and son were missing.

The later scrutiny of Alan should not be interpreted as proof that he was responsible. No criminal charge has been filed against him in connection with Sandra and John’s disappearance, and the publicly available records do not establish who caused them to vanish.

The significance of the later investigation is instead that detectives reconsidered possibilities that had not been exhaustively pursued in 1996.

The Missing Journal

One potentially valuable item was Sandra’s personal journal or diary.

Sgt. Connor believed the journal could have provided information about Sandra’s relationships, emotional state and activities during the weeks before she disappeared. By the time investigators attempted to locate it during the renewed investigation, however, the journal could not be obtained.

The later police-file investigation also examined an address in rural North Carolina that had previously been associated with Sandra and Alan. Public reporting has not established that the property was connected to the disappearance, but its appearance in background records was among the leads reviewed during the reinvestigation.

A Possible 2004 Sighting

A possible sighting of Sandra and John was reported in Warroad, Minnesota, in June 2004.

The sighting was never confirmed. It nevertheless occurred around the same period that the case was receiving renewed attention.

No verified sighting of either Sandra or John has subsequently been publicly established.

Where the Investigation Stands Today

As of August 2026, Sandra Jacobson remains listed in North Dakota’s current missing-person database, with the Bismarck Police Department identified as the investigating agency. The North Dakota Attorney General also continues to publish Sandra and John’s disappearance among the state’s cold cases.

John remains listed by the National Center for Missing & Exploited Children. NCMEC displays an age-progressed image showing how John might appear as an adult and continues to direct information to the Bismarck Police Department.

The most substantial recent public examination of the actual police investigation remains the 2022 Forum News Service/The Vault review of the Bismarck Police file. That reporting revealed the extent of the later reinvestigation and several weaknesses in the original case. More recent programs, including a lengthy January 2026 Trace Evidence episode, have revisited the evidence publicly, but they represent independent media examinations rather than announced law-enforcement breakthroughs.

No publicly announced arrest, confirmed recovery of remains or definitive explanation for the disappearance was located in current official records.

Sandra would now be in her mid-60s, while John would be an adult in his mid-30s. Their disappearance remains one of North Dakota’s enduring missing-person mysteries.