Crime Solvers Central
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 (MP50745) and 3 other sources
In the summer of 1966, a 41-year-old vending machine salesman from Denver, Colorado, named Charles Keith Beth, traveled to Tucson, Arizona, for a business trip. Known to some as C.K. Beth, he was staying at the Ramada Inn in the downtown area of the city. On August 5, 1966, all communication from him ceased, and he was not seen or heard from again. His disappearance was formally reported to the Tucson Police Department five days later, on August 10, 1966. Investigators found his hotel room to be an unusual scene; his personal belongings, including his clothes, were still in the room. It was noted, however, that a dark silk suit and a pair of dress shoes were apparently missing from his wardrobe.

The investigation into Charles's disappearance deepened when his car was discovered many days later. The vehicle was found locked and abandoned near the United States and Mexico border in Nogales, Arizona. This discovery added a perplexing layer to the case, leaving authorities to ponder whether his work as a salesman had led him into unforeseen trouble or if he had other reasons for being near the border. Despite the efforts of the Tucson Police Department, the trail grew cold, and the circumstances surrounding his vanishing remained a mystery.

Decades have passed since Charles Keith Beth was last seen, and his case remains an unresolved and troubling enigma. The known facts are sparse: a salesman on a business trip, a hotel room with possessions left behind, and a car found near the border. These elements create a narrative filled with unanswered questions. The lack of further evidence or witnesses has left his family and investigators without closure. The case of Charles Keith Beth serves as a somber reminder of the many individuals who have disappeared under mysterious circumstances, leaving behind lives and stories that are tragically incomplete.

Last Seen: Aug 5, 1966

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.

80%Moderate
John Doe — Tucson, Arizona - unidentified case UP17039
John Doe — Tucson, Arizona
UP17039 • Found Apr 29, 1974
View case
Sex ✓Male
Age 85%Est. 20–45 vs 41 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 8 years after last seen
Height 100%5'11" vs 6'0"
Hair 100%Brown vs Brown
Eyes 70%Green vs Hazel
77%Possible
John Doe — Tucson, Arizona - unidentified case UP11669
John Doe — Tucson, Arizona
UP11669 • Found Aug 20, 1975
View case
Sex ✓Male
Age 89%Est. 25–40 vs 41 when missing
Race 100%White
Location 100%2 mi away, same county
TimingFound 9 years after last seen
Height 68%5'9" vs 6'0"
Weight 100%185 lb vs 165–170 lb
Hair 60%Black vs Brown
Eyes 60%Brown vs Hazel
76%Possible
John Doe — Phoenix, Arizona - unidentified case UP1899
John Doe — Phoenix, Arizona
UP1899 • Found Sep 2, 1982
View case
Sex ✓Male
Age 100%Est. 50–60 vs 41 when missing
Race 100%White
Location 74%106 mi away, same state
TimingFound 16 years after last seen
Height 100%6'1" vs 6'0"
Weight 76%128 lb vs 165–170 lb
Hair 100%Brown vs Brown
Eyes 60%Brown vs Hazel
75%Possible
John Doe — Tucson, Arizona - unidentified case UP11044
John Doe — Tucson, Arizona
UP11044 • Found Apr 7, 1992
View case
Sex ✓Male
Age 100%Est. 45–60 vs 41 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 26 years after last seen
Height 52%5'8" vs 6'0"
Weight 100%164 lb vs 165–170 lb
Hair 70%Gray vs Brown
Eyes 30%Blue 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.

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