Barbara Louise Cotton

Barbara Louise Cotton was born November 10, 1965, in Tioga, North Dakota, and was 15 years old when she disappeared from Williston on April 11, 1981. At the time, Williston was in the midst of an oil boom that had drawn thousands of transient workers to the region. Barbara worked at the Country Kitchen diner and, according to family and friends, was saving money for an apartment she planned to share with her best friend. She had also been fitted for a dress to serve as maid of honor at that friend's wedding, planned for July 1981.

Accounts of her last evening differ in some details. According to the Williston Herald, Barbara had dinner at Cakes 'n Cones, a restaurant at the Plainsman Hotel on Main Street, with her mother Louise and a young man described in some accounts as her boyfriend. After dinner, the young man reportedly offered to walk Barbara home, but she declined; he said he watched her walk down 4th Street West toward Recreation Park, only blocks from her family's home on 6th Avenue West. She never arrived. Her mother filed a missing person report the following afternoon, April 12, 1981. Barbara left behind her paycheck, an untouched savings account of several thousand dollars, a nearly full carton of cigarettes, her glasses, and all of her clothing — facts her family has long cited as evidence she did not run away voluntarily.

Police initially treated the disappearance as a runaway case, and later reviews found sparse documentation of the original investigation. Over the years, the Williston Police Department identified three persons of interest, none of whom was ever charged. Stacey Werder (spelled Wardner in some accounts), the young man at dinner that night, left Williston within days for oilfield work in Montana; he died by suicide in a Montana jail in July 1981. Frank Delapeña, an oilfield seismology worker present in Williston from March to May 1981, was arrested in May 1981 for the abduction and murder of two girls in Rawlins, Wyoming, and died by suicide in a Colorado jail later that month; police reportedly contacted Wyoming authorities about him, but no confirmed connection to Barbara was ever established. Barbara's older brother Frank Cotton, who died of cancer in 1999, was also listed as a person of interest.

The case drew renewed attention beginning in 2021, when journalist James Wolner's Dakota Spotlight podcast launched 'A Better Search for Barbara,' a 21-episode investigation that re-examined police records, witness statements, and leads across North Dakota, Montana, and California. The Vanished podcast covered the case in 2022. The podcast investigations surfaced possible later sightings, including reports that Barbara may have attended a party at an apartment complex that evening and an account placing her at a Williston hospital about a week after her disappearance, though neither has been confirmed. In 2025, Dakota Spotlight reported locating a witness who knew both Barbara and her alleged boyfriend.

Barbara Cotton has never been found, and no remains have been identified as hers. Her sister, Kathy Nulph, told the Williston Herald in 2026 that every lead generated since the podcast has reached a dead end, though police continue to receive tips each year. The case remains open with the Williston Police Department, listed with NamUs as case MP2921.