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 (MP39) and 5 other sources
Michael William Grimm, a 33-year-old man, was last seen on November 23, 2000, in Palm Springs, California. He had connections to multiple cities, including West Hollywood, San Francisco, Los Angeles, Miami, and Houston. His last known location on that Thanksgiving Day remains a mystery, and he has not been heard from since. At the time of his disappearance, Grimm was dealing with a relapse in his substance abuse issues, having previously remained sober for several years following rehabilitation.

Grimm’s disappearance is shrouded in suspicion. In January 2001, his family received an anonymous phone call claiming that he had been shot shortly after going missing. This information has never been verified, but authorities are treating the case as a possible homicide due to the suspicious nature of his vanishing. Despite this, no concrete evidence of his death has surfaced, and the case remains unsolved.

Grimm had a distinct scar on his left thumb where the tip had been surgically reattached. His head was shaved, and he had striking blue eyes at the time of his disappearance. Authorities from both California and Texas have been involved in the investigation, but years later, his fate remains unknown.

Last Seen: Nov 23, 2000

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.

81%Moderate
John Doe — South Gate, California
UP10986 • Found Oct 2, 2012
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Sex ✓Male
Age 100%Est. 28–38 vs 33 when missing
Race 100%White
Location 99%13 mi away, same county
TimingFound 12 years after last seen
Height 100%5'7"–6'1" vs 6'0"
Weight 99%157 lb vs 175 lb
Hair 60%Black vs Brown
80%Moderate
John Doe — Los Angeles, California
UP104480 • Found Mar 22, 2023
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Sex ✓Male
Age 100%Est. 55–70 vs 33 when missing
Race 100%White
Location 100%6 mi away, same county
TimingFound 22 years after last seen
Height 68%5'6"–5'9" vs 6'0"
Weight 100%180–190 lb vs 175 lb
Hair 100%Brown vs Brown
Eyes 100%Blue vs Blue
80%Moderate
John Doe — Irwindale, California
UP12863 • Found Feb 13, 2014
View case
Sex ✓Male
Age 100%Est. 40 vs 33 when missing
Race 100%White
Location 97%22 mi away, same county
TimingFound 13 years after last seen
Height 100%5'7"–6'1" vs 6'0"
Hair 100%Brown vs Brown
80%Moderate
John Doe — Long Beach, California
UP3051 • Found Dec 3, 2005
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Sex ✓Male
Age 92%Est. 39–49 vs 33 when missing
Race 100%White
Location 96%26 mi away, same county
TimingFound 5 years after last seen
Height 100%5'9"–5'11" vs 6'0"
Weight 100%180–210 lb vs 175 lb
Hair 40%Gray vs Brown
79%Possible
John Doe — Los Angeles, California - unidentified case UP12864
John Doe — Los Angeles, California
UP12864 • Found Feb 13, 2014
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Sex ✓Male
Age 85%Est. 28–50 vs 33 when missing
Race 100%White
Location 100%7 mi away, same county
TimingFound 13 years after last seen
Height 100%5'7"–6'0" vs 6'0"
Weight 100%175–190 lb vs 175 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue
79%Possible
John Doe — Glendora, California
UP7522 • Found Jul 13, 2008
View case
Sex ✓Male
Age 85%Est. 32–48 vs 33 when missing
Race 100%White
Location 95%29 mi away, same county
TimingFound 8 years after last seen
Height 100%5'7"–5'11" vs 6'0"
Weight 91%114–150 lb vs 175 lb
Hair 60%Black vs Brown
79%Possible
John Doe — Porter Ranch, California - unidentified case UP2962
John Doe — Porter Ranch, California
UP2962 • Found Jan 19, 2008
View case
Sex ✓Male
Age 100%Est. 37–47 vs 33 when missing
Race 100%White
Location 98%17 mi away, same county
TimingFound 7 years after last seen
Height 68%5'7"–5'9" vs 6'0"
Weight 100%185–200 lb vs 175 lb
Hair 60%Black vs Brown
78%Possible
John Doe — Los Angeles, California - unidentified case UP78168
John Doe — Los Angeles, California
UP78168 • Found Mar 19, 2020
View case
Sex ✓Male
Age 85%Est. 45–65 vs 33 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 19 years after last seen
Height 84%5'5"–5'10" vs 6'0"
Weight 100%140–160 lb vs 175 lb
Hair 70%Gray vs Brown
Eyes 100%Blue vs Blue
78%Possible
John Doe — Los Angeles, California - unidentified case UP16874
John Doe — Los Angeles, California
UP16874 • Found Jul 20, 2017
View case
Sex ✓Male
Age 100%Est. 30–45 vs 33 when missing
Race 100%White
Location 99%13 mi away, same county
TimingFound 17 years after last seen
Height 100%5'10"–6'2" vs 6'0"
78%Possible
John Doe — Los Angeles, California - unidentified case UP14611
John Doe — Los Angeles, California
UP14611 • Found Sep 9, 2015
View case
Sex ✓Male
Age 85%Est. 50 vs 33 when missing
Race 100%White
Location 100%6 mi away, same county
TimingFound 15 years after last seen
Height 100%5'11" vs 6'0"
Weight 86%145 lb vs 175 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Blue

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.