Crime Solvers Central
Crime Solvers Central
302 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 (MP1209) and 5 other sources
John Henry Geppert III, also known as "Jack," was last seen on December 10, 1988, in Los Angeles, California. He was 27 years old at the time of his disappearance. Although some sources list different dates for his last known contact, such as 1995, it is widely accepted that his family last spoke to him in 1988, when he was located in Huntington Beach, California. Geppert informed his family he would not be able to attend a family wedding, after which he was never heard from again.

At the time of his disappearance, Geppert was described as standing between 5'8" and 6'0", weighing between 160 to 180 pounds, with light brown hair and brown eyes. He had a small hernia scar in his groin area and had previously fractured his collarbone. Geppert's case has been classified as endangered missing, and despite extensive searches, his whereabouts remain unknown.

The investigation has been handled by authorities in Huntington Beach, but his disappearance continues to puzzle both his family and law enforcement. His case remains open, and anyone with information is encouraged to contact the Huntington Beach Police Department.

Last Seen: Dec 10, 1988

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.

88%Strong
John Doe — California
UP3941 • Found Oct 28, 1989
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Sex ✓Male
Age 100%Est. 24–36 vs 27
Race 100%White
Location 100%Same area, same county
TimingFound 11 months after last seen
Height 100%5'11" vs 5'10"–6'0"
Weight 100%160 lb vs 160–180 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
88%Strong
John Doe — Pasadena, California
UP3957 • Found Aug 31, 1989
View case
Sex ✓Male
Age 100%Est. 23–29 vs 27
Race 100%White
Location 100%9 mi away, same county
TimingFound 9 months after last seen
Height 100%6'1" vs 5'10"–6'0"
Weight 100%185 lb vs 160–180 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
86%Strong
John Doe — California
UP3920 • Found Feb 3, 1990
View case
Sex ✓Male
Age 100%Est. 19–29 vs 27 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 14 months after last seen
Height 100%5'9" vs 5'10"–6'0"
Weight 95%139 lb vs 160–180 lb
Hair 100%Brown vs Brown
86%Strong
John Doe — California
UP3930 • Found Dec 4, 1989
View case
Sex ✓Male
Age 100%Est. 18–28 vs 27
Race 100%White
Location 100%Same area, same county
TimingFound 12 months after last seen
Height 100%5'11" vs 5'10"–6'0"
Weight 100%158 lb vs 160–180 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
85%Strong
John Doe — Los Angeles, California
UP16511 • Found May 7, 1994
View case
Sex ✓Male
Age 100%Est. 30 vs 27 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 5 years after last seen
Height 100%5'9" vs 5'10"–6'0"
Weight 100%154 lb vs 160–180 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
85%Strong
John Doe — South El Monte, California
UP3396 • Found May 7, 1999
View case
Sex ✓Male
Age 100%Est. 28–43 vs 27 when missing
Race 100%White
Location 100%11 mi away, same county
TimingFound 10 years after last seen
Height 100%5'10" vs 5'10"–6'0"
Weight 100%145 lb vs 160–180 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
85%Strong
John Doe — California
UP3897 • Found Jul 20, 1990
View case
Sex ✓Male
Age 100%Est. 18–28 vs 27 when missing
Race 100%White
Location 100%Same area, same county
TimingFound 19 months after last seen
Height 84%5'8" vs 5'10"–6'0"
Weight 100%166 lb vs 160–180 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
85%Strong
John Doe — California
UP3949 • Found Oct 2, 1989
View case
Sex ✓Male
Age 100%Est. 25–35 vs 27
Race 100%White
Location 100%Same area, same county
TimingFound 10 months after last seen
Height 84%5'8" vs 5'10"–6'0"
Weight 100%187 lb vs 160–180 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
85%Strong
John Doe — California
UP3992 • Found Mar 12, 1989
View case
Sex ✓Male
Age 100%Est. 19–29 vs 27
Race 100%White
Location 100%Same area, same county
TimingFound 3 months after last seen
Height 68%5'7" vs 5'10"–6'0"
Weight 100%145 lb vs 160–180 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
85%Strong
John Doe — California
UP4013 • Found Nov 15, 1988
View case
Sex ✓Male
Age 100%Est. 20–30 vs 27
Race 100%White
Location 100%Same area, same county
TimingFound same day as last seen
Height 84%5'8" vs 5'10"–6'0"
Weight 100%159 lb vs 160–180 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown

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.