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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 (MP21376) and 5 other sources
In the autumn of 1987, 36-year-old Robert Louis Arcaris vanished from Las Vegas, Nevada, leaving behind a mysterious and unresolved case. On October 12, 1987, Arcaris was reportedly boating on Lake Mead, a vast reservoir just east of the city. He was never seen or heard from again after that day. At the time of his disappearance, he was described as a white male, standing at 5'10' and weighing around 140 pounds, with brown hair and hazel eyes. Distinctive marks included scars on his forehead, right cheek, and near his right eye. The investigation into his disappearance was complicated by the fact that Arcaris was known to use several aliases, including Robert Lee Harrison, Robert Lyons, Louis Robert Meyers, and Louis Myers.

The circumstances surrounding Robert Arcaris's disappearance remain murky, with very few details available to the public. Authorities from the Las Vegas Metropolitan Police Department have investigated his case, but the passage of time has not brought any definitive answers. One theory that has emerged is the possibility of foul play. Some investigators believe he may have been the victim of a homicide that occurred in the vicinity of Lake Mead around the time he went missing. However, no concrete evidence has surfaced to substantiate this theory, leaving his case open and unsolved.

The official report indicates that Arcaris had no vehicle available to him at the time of his disappearance. The lack of personal transportation adds another layer of complexity to understanding his last movements. The Las Vegas Metropolitan Police Department continues to list him as a missing person in their cold case files, hoping that new information might one day shed light on what happened to him. The overview of the case is one of a man who went out for a day of boating and seemingly vanished without a trace, leaving his family and investigators with lingering questions and a case that has grown cold over the decades.

Last Seen: Oct 12, 1987

Possible Unidentified Matches (10)

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.

85%Strong
John Doe — Nevada
UP9102 • Found Oct 18, 1987
View case
Sex ✓Male
Age 100%Est. 35–45 vs 36
Race 100%White
Location 100%7 mi away, same county
TimingFound 6 days after last seen
Height 84%5'8" vs 5'10"
Weight 100%135 lb vs 140 lb
Hair 100%Brown vs Brown
82%Moderate
John Doe — Las Vegas, Nevada - unidentified case UP9009
John Doe — Las Vegas, Nevada
UP9009 • Found Jan 19, 1997
View case
Sex ✓Male
Age 100%Est. 45–60 vs 36 when missing
Race 100%White
Location 100%3 mi away, same county
TimingFound 9 years after last seen
Height 100%5'10" vs 5'10"
Weight 66%177 lb vs 140 lb
Hair 40%Gray vs Brown
Eyes 100%Hazel vs Hazel
82%Moderate
John Doe — Las Vegas, Nevada
UP308 • Found Jun 1, 1989
View case
Sex ✓Male
Age 100%Est. 30–39 vs 36 when missing
Race 100%White
Location 100%3 mi away, same county
TimingFound 20 months after last seen
Height 100%5'11" vs 5'10"
Weight 0%223 lb vs 140 lb
Hair 100%Brown vs Brown
Eyes 60%Brown vs Hazel
80%Moderate
John Doe — Henderson, Nevada
UP266 • Found Apr 5, 1996
View case
Sex ✓Male
Age 100%Est. 30–40 vs 36 when missing
Race 100%White
Location 98%18 mi away, same county
TimingFound 8 years after last seen
Height 84%5'8" vs 5'10"
Hair 100%Brown vs Brown
79%Possible
John Doe — Las Vegas, Nevada - unidentified case UP11598
John Doe — Las Vegas, Nevada
UP11598 • Found Aug 29, 2013
View case
Sex ✓Male
Age 85%Est. 40–60 vs 36 when missing
Race 100%White
Location 100%2 mi away, same county
TimingFound 26 years after last seen
Height 100%5'9" vs 5'10"
Weight 100%141 lb vs 140 lb
Hair 100%Brown vs Brown
Eyes 60%Brown vs Hazel
79%Possible
John Doe — Boulder City, Nevada
UP269 • Found Jul 7, 1996
View case
Sex ✓Male
Age 100%Est. 30–40 vs 36 when missing
Race 100%White
Location 97%22 mi away, same county
TimingFound 9 years after last seen
Height 84%6'0" vs 5'10"
Weight 100%140 lb vs 140 lb
Hair 50%Red vs Brown
Eyes 30%Blue vs Hazel
79%Possible
John Doe — Barstow, California - unidentified case UP2573
John Doe — Barstow, California
UP2573 • Found Mar 15, 1988
View case
Sex ✓Male
Age 100%Est. 35–40 vs 36
Race 100%White
Location 68%137 mi away
TimingFound 5 months after last seen
Height 100%5'9" vs 5'10"
Weight 100%129 lb vs 140 lb
Hair 40%Gray vs Brown
Eyes 70%Green vs Hazel
78%Possible
John Doe — Las Vegas, Nevada
UP397 • Found Apr 3, 2007
View case
Sex ✓Male
Age 100%Est. 35–40 vs 36 when missing
Race 100%White
Location 98%18 mi away, same county
TimingFound 19 years after last seen
Height 100%5'9" vs 5'10"
78%Possible
John Doe — Las Vegas, Nevada
UP275 • Found Jun 12, 1995
View case
Sex ✓Male
Age 91%Est. 45–55 vs 36 when missing
Race 100%White
Location 100%5 mi away, same county
TimingFound 8 years after last seen
Height 52%6'2" vs 5'10"
Weight 100%150 lb vs 140 lb
Hair 100%Brown vs Brown
77%Possible
John Doe — Henderson, Nevada
UP104115 • Found Dec 22, 2022
View case
Sex ✓Male
Age 100%Est. 38–52 vs 36 when missing
Race 100%White
Location 100%12 mi away, same county
TimingFound 35 years after last seen
Height 100%5'11" vs 5'10"

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.