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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 (MP133621) and 4 other sources
On May 10, 1975, a 30-year-old man named Sam Allen embarked on a hike with his wife and a friend into the scenic but rugged Kuuloa Mountain Range in Kaneohe, Hawaii. The group ventured along a trail, surrounded by the lush, tropical landscape of Oahu's windward coast. At some point during their trek, Sam's wife and their friend decided to conclude their hike and turn back, while Sam, an avid outdoorsman, made the fateful decision to continue on the trail by himself. He was in good physical condition, described as being six feet tall and weighing around 170 pounds, with brown hair and blue eyes. His intention to prolong his hike into the beautiful but challenging terrain was the last interaction his companions would have with him.

As the hours passed with no sign of his return, concern began to mount. Sam Allen never emerged from the trail he had decided to explore alone. The initial hope that he had simply been delayed gave way to the serious reality that he was missing in the vast wilderness. This prompted the beginning of what would become an extensive and desperate search effort. The Honolulu Police Department was notified, and a formal report was filed a few days after he was last seen. The search for Sam was a significant operation, involving not only official agencies like the Honolulu Fire Department but also numerous private parties who volunteered their time and resources, all combing the dense foliage and treacherous paths of the Kuuloa mountains.

Despite the exhaustive searches by air and on foot, Sam was never located. The only trace of him ever found was his abandoned napsack, discovered on the trail, a silent testament to his presence in the mountains. The discovery of the bag brought no clues as to what might have happened to him, and the reports from the time did not specify what clothing he was wearing, leaving few details for investigators to work with. Decades have passed since Sam Allen vanished, and his case has grown cold, filed under the Honolulu Police Department case number 75-C25195. The narrative of his disappearance is a somber one: a man goes for a hike with loved ones, parts ways to continue his journey alone, and is never heard from or seen again, leaving behind only questions and a profound sense of loss in the heart of the Hawaiian mountains.

Last Seen: May 10, 1975

Possible Unidentified Matches (7)

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.

79%Possible
John Doe — Honolulu, Hawaii
UP6925 • Found Jul 7, 1987
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Sex ✓Male
Age 88%Est. 19–29 vs 30 when missing
Race 100%White
Location 100%10 mi away, same county
TimingFound 12 years after last seen
Height 100%5'11" vs 6'0"
Weight 88%143 lb vs 170 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue
79%Possible
John Doe — Honolulu, Hawaii
UP6907 • Found Feb 24, 1979
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Sex ✓Male
Age 100%Est. 20–35 vs 30 when missing
Race 100%White
Location 100%5 mi away, same county
TimingFound 4 years after last seen
Height 36%5'7" vs 6'0"
Weight 84%139 lb vs 170 lb
Hair 100%Brown vs Brown
Eyes 70%Gray vs Blue
78%Possible
John Doe — Haleiwa, Hawaii
UP6920 • Found May 24, 1983
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Sex ✓Male
Age 85%Est. 19–40 vs 30 when missing
Race 100%White
Location 96%24 mi away, same county
TimingFound 8 years after last seen
Height 100%6'0" vs 6'0"
Hair 100%Brown vs Brown
76%Possible
John Doe — Haleiwa, Hawaii
UP6926 • Found Sep 26, 1989
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Sex ✓Male
Age 96%Est. 45–55 vs 30 when missing
Race 100%White
Location 96%24 mi away, same county
TimingFound 14 years after last seen
Height 68%5'9" vs 6'0"
Weight 81%137 lb vs 170 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue
75%Possible
John Doe — Honolulu, Hawaii - unidentified case UP15422
John Doe — Honolulu, Hawaii
UP15422 • Found Jun 8, 2016
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Sex ✓Male
Age 85%Est. 30–49 vs 30 when missing
Race 100%White
Location 100%9 mi away, same county
TimingFound 41 years after last seen
Height 100%6'1" vs 6'0"
Weight 100%165 lb vs 170 lb
Hair 60%Black vs Brown
Eyes 0%Brown vs Blue
75%Possible
John Doe — Honolulu, Hawaii
UP6928 • Found Apr 19, 1996
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Sex ✓Male
Age 100%Est. 45–55 vs 30 when missing
Race 100%White
Location 100%8 mi away, same county
TimingFound 21 years after last seen
Height 68%5'9" vs 6'0"
Hair 70%Gray vs Brown
75%Possible
John Doe — Waimanalo, Hawaii
UP5580 • Found Jul 18, 1993
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Sex ✓Male
Age 100%Est. 35–45 vs 30 when missing
Race 100%White
Location 100%7 mi away, same county
TimingFound 18 years after last seen
Height 68%5'9" vs 6'0"

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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