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Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP5540) and 6 other sources
Tereasa Sue Knuth was a 22-year-old woman who vanished under puzzling circumstances while on a camping trip with her boyfriend. The last time she was reportedly seen was in the vicinity of Frisco, Colorado, a mountain town in Summit County. On August 24, 1981, her boyfriend reported her missing, stating that she had walked away from their campsite and never returned. The initial search of the area and their campsite revealed that Tereasa had left behind several crucial personal items, including her identification, cigarettes, and other belongings. This detail struck investigators as unusual, as it seemed unlikely she would have intentionally left without such essential items.

The clothing Tereasa was believed to have been wearing at the time of her disappearance included blue jeans, a lightweight sweater with pastel colors of pink, green, blue, and yellow, and square-toed riding boots. Despite having a description of her attire, extensive and repeated searches of the rugged terrain surrounding the campsite yielded no clues. Over the years, law enforcement and volunteers have combed the area, but no trace of Tereasa or her belongings has ever been discovered. The absence of any physical evidence has made it incredibly difficult for investigators to determine what might have happened to her.

The circumstances of Tereasa's disappearance remain an unsolved mystery. With no witnesses other than her boyfriend and a complete lack of evidence, her case quickly went cold. Investigators have been left with many unanswered questions about the events that transpired on that late August day. Over the decades, her family has had to endure the pain of not knowing her fate. The case is a poignant reminder of how a person can seemingly vanish without a trace, leaving behind a legacy of uncertainty and a lingering hope for answers. The investigation into what happened to Tereasa Knuth continues, a cold case that still awaits a resolution.

Last Seen: Aug 24, 1981

Possible Unidentified Matches (1)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

75%Possible
View case
Sex ✓Female
Age 100%Est. 25–40 vs 22 when missing
Race 100%White
Location 76%97 mi away, same state
TimingFound 6 years after last seen
Height 52%5'5" vs 5'1"
Weight 100%115 lb vs 110 lb
Hair 100%Brown vs Brown

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.