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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 (MP320) and 11 other sources
In the summer of 1981, eighteen-year-old Jon Truscott Haynes arrived in Boulder, Colorado, with aspirations of attending the University of Colorado. This move should have been the exciting start of a new academic and personal journey. However, his plans were abruptly cut short. The last confirmed sighting of Jon was at a 7-11 convenience store near the intersection of 28th Street and Baseline Road in Boulder. Following this brief stop, both Jon and the vehicle he was driving, a beige 1981 two-door Subaru with California license plate 1CPK105, vanished. The absence of any communication or further sightings created a perplexing and distressing situation for his family, who were left to wonder what had become of the young man on the cusp of adulthood.

At the time of his disappearance, Jon was described as a Caucasian male, standing five feet ten inches tall and weighing around 140 pounds. He had blond hair, light green eyes, and was noted to have some minor acne. Authorities and his family had little to go on, as there was no specific information available about the clothing he was wearing on the day he was last seen. This lack of detail presented an immediate challenge for investigators trying to retrace his steps or identify potential witnesses. The concurrent disappearance of his vehicle added another layer of complexity to the case, leaving open the possibility that he may have traveled a significant distance, either willingly or unwillingly, from where he was last observed.

The Boulder County Sheriff's Office has kept the investigation into Jon Haynes's disappearance open for decades, a testament to the enduring hope of providing answers to his loved ones. Information regarding his case was disseminated to various agencies, including the National Center for Missing & Exploited Children. In an effort to generate new leads as years turned into decades, age-progressed photographs have been created and released to the public, offering a glimpse of what Jon might look like as he aged. Despite these efforts, the case has grown cold, with no significant breakthroughs to illuminate the circumstances of that day in July 1981. The official record simply states that Jon Haynes was last seen at a convenience store and then disappeared, a sparse and haunting summary of a life interrupted and a mystery that has painfully endured.

Last Seen: Jul 24, 1981

Possible Unidentified Matches (4)

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.

78%Possible
John Doe — Fort Collins, Colorado - unidentified case UP454
John Doe — Fort Collins, Colorado
UP454 • Found Jul 12, 1997
View case
Sex ✓Male
Age 100%Est. 18–30 vs 18 when missing
Race 100%White
Location 90%49 mi away, same state
TimingFound 16 years after last seen
Height 100%5'11" vs 5'10"
Weight 91%160 lb vs 140 lb
Hair 50%Brown vs Blond
77%Possible
John Doe — Denver, Colorado
UP7163 • Found Oct 16, 1983
View case
Sex ✓Male
Age 100%Est. 20–30 vs 18 when missing
Race 100%White
Location 95%29 mi away, same state
TimingFound 2 years after last seen
Height 68%5'7" vs 5'10"
Weight 100%136 lb vs 140 lb
Hair 10%Black vs Blond
Eyes 0%Brown vs Green
76%Possible
John Doe — Fort Collins, Colorado - unidentified case UP4813
John Doe — Fort Collins, Colorado
UP4813 • Found Sep 16, 1994
View case
Sex ✓Male
Age 100%Est. 25–35 vs 18 when missing
Race 100%White
Location 90%49 mi away, same state
TimingFound 13 years after last seen
Height 100%5'9" vs 5'10"
Weight 100%140 lb vs 140 lb
Hair 10%Black vs Blond
Eyes 0%Brown vs Green
75%Possible
John Doe — Unincorporated Chaffee County, Colorado - unidentified case UP9272 View case
Sex ✓Male
Age 100%Est. 15–19 vs 18
Race 100%White
Location 77%92 mi away, same state
TimingFound 7 weeks after last seen
Height 52%5'6" vs 5'10"
Weight 91%160 lb vs 140 lb

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.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.