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Crime Solvers Central
298 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 (MP9599) and 4 other sources
In the autumn of 1986, a 27-year-old man named Thayne Alan Smika moved out of his Denver, Colorado, home and effectively vanished. He was last seen on October 1, 1986, a man with brown, curly hair and a full beard, leaving behind a life that was quietly unraveling. His disappearance was not immediately treated as that of a typical missing person, as it was intertwined with serious legal troubles. At the time he went missing, Smika was facing an arrest warrant for forgery, a charge stemming from his alleged actions as a bookkeeper. However, a far more serious allegation loomed over him, connecting him to a high-profile homicide that had occurred three years prior in Boulder, Colorado.

The shadow that followed Thayne Smika was cast by the August 1, 1983, murder of his roommate, Sidney Wells. Wells, a student at the University of Colorado, was found in their shared apartment with a fatal gunshot wound to the head. The case garnered significant media attention, partly because Wells was dating the daughter of actor Robert Redford at the time. Smika was quickly identified as a suspect and was arrested in connection with the murder. However, the district attorney at the time determined there was insufficient evidence to secure a conviction, and Smika was released. Despite being let go, the suspicion never fully dissipated. A possible motive suggested by police was that Smika owed Wells rent money on the day of the murder.

After his release, Smika continued to live in the Denver area until the forgery and theft allegations surfaced in 1986, prompting a new warrant for his arrest. It was then that he disappeared. A significant break in the timeline of his disappearance came when his vehicle was discovered abandoned in Hollywood, California, later that same year. The car had a stolen license plate, and a search of the vehicle yielded no new leads as to his whereabouts. For years, the case grew cold. Then, in December 2010, based on new ballistics evidence that reportedly linked shotgun pellets from the crime scene to shells found at Smika's family home, a first-degree murder warrant was issued for his arrest in connection with the death of Sidney Wells. Shortly after, a federal warrant was issued for unlawful flight to avoid prosecution. Despite these warrants and renewed efforts to locate him, including the release of age-progressed photos, Thayne Smika has never been found. His case remains an unsettling mystery, a dual narrative of a man who vanished while facing accusations of financial crime and the unresolved, violent death of his former roommate.

Last Seen: Oct 1, 1986

Possible Unidentified Matches (6)

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.

82%Moderate
John Doe — Denver, Colorado - unidentified case UP13758
John Doe — Denver, Colorado
UP13758 • Found Nov 5, 1990
View case
Sex ✓Male
Age 100%Est. 30–40 vs 27 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 4 years after last seen
Height 68%5'7" vs 5'10"–6'0"
Weight 87%120 lb vs 145–155 lb
Hair 100%Brown vs Brown
Eyes 60%Brown vs Hazel
80%Moderate
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 27 when missing
Race 100%White
Location 86%62 mi away, same state
TimingFound 11 years after last seen
Height 100%5'11" vs 5'10"–6'0"
Weight 100%160 lb vs 145–155 lb
Hair 100%Brown vs Brown
80%Moderate
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 27 when missing
Race 100%White
Location 86%62 mi away, same state
TimingFound 8 years after last seen
Height 100%5'9" vs 5'10"–6'0"
Weight 100%140 lb vs 145–155 lb
Hair 60%Black vs Brown
Eyes 60%Brown vs Hazel
80%Moderate
John Doe — Denver, Colorado
UP7167 • Found Jan 30, 1987
View case
Sex ✓Male
Age 100%Est. 25–35 vs 27
Location 100%4 mi away, same county
TimingFound 4 months after last seen
Height 100%6'1" vs 5'10"–6'0"
Weight 100%157 lb vs 145–155 lb
Hair 60%Black vs Brown
79%Possible
John Doe — Glendale, Colorado - unidentified case UP11476
John Doe — Glendale, Colorado
UP11476 • Found Feb 10, 1998
View case
Sex ✓Male
Age 100%Est. 25–30 vs 27 when missing
Race 100%White
Location 100%Same area, same state
TimingFound 11 years after last seen
Height 84%5'8" vs 5'10"–6'0"
Weight 63%196 lb vs 145–155 lb
Hair 60%Black vs Brown
Eyes 60%Brown vs Hazel
77%Possible
John Doe — Denver, Colorado - unidentified case UP7173
John Doe — Denver, Colorado
UP7173 • Found Jan 8, 1997
View case
Sex ✓Male
Age 77%Est. 20–25 vs 27 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 10 years after last seen
Height 68%5'7" vs 5'10"–6'0"
Weight 100%160 lb vs 145–155 lb
Hair 100%Brown vs Brown
Eyes 60%Brown vs Hazel

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.

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