Crime Solvers Central
Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP54612) and 4 other sources
Olga Severina McQuinn, aged 81, was last seen on April 13, 1989, at her home in Rowland Heights, California. McQuinn, who suffered from dementia and a nervous condition, was known to become easily disoriented. On the day of her disappearance, she was wearing slacks and brown dress shoes. Despite searches, she has never been found, and no significant leads have surfaced since her disappearance.

Olga was described as a petite woman, standing at 5'0" and weighing around 100 pounds. She had gray hair, brown eyes, and wore eyeglasses. Her case is classified as endangered missing due to her medical conditions, which likely made her more vulnerable. Investigators have kept the case open, but no new information has been revealed.

Authorities encourage anyone with information to contact the Los Angeles County Sheriff's Department, as the mystery surrounding Olga’s disappearance remains unsolved after decades.

Last Seen: Apr 13, 1989

Possible Unidentified Matches (5)

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.

78%Possible
Jane Doe — California
UP3136 • Found Jun 27, 2003
View case
Sex ✓Female
Age 70%Est. 65–75 vs 81 when missing
Race 100%White
Location 97%21 mi away, same county
TimingFound 14 years after last seen
Height 100%5'1" vs 4'11"–5'1"
Weight 100%102 lb vs 95–105 lb
Hair 70%Brown vs Gray
Eyes 100%Brown vs Brown
76%Possible
Jane Doe — Valencia, California
UP3586 • Found Oct 6, 1995
View case
Sex ✓Female
Age 85%Est. 65–85 vs 81 when missing
Race 100%White
Location 89%51 mi away, same county
TimingFound 6 years after last seen
Height 100%5'0" vs 4'11"–5'1"
Weight 14%150–175 lb vs 95–105 lb
Hair 100%Gray vs Gray
76%Possible
Jane Doe — San Bernardino, California - unidentified case UP159165
Jane Doe — San Bernardino, California
UP159165 • Found Oct 6, 2025
View case
Sex ✓Female
Age 100%Est. 80–90 vs 81 when missing
Race 100%White
Location 92%38 mi away, same state
TimingFound 36 years after last seen
Height 84%4'8"–4'9" vs 4'11"–5'1"
Weight 14%48–50 lb vs 95–105 lb
Hair 100%Gray vs Gray
Eyes 100%Brown vs Brown
75%Possible
Jane Doe — Los Angeles, California - unidentified case UP3425
Jane Doe — Los Angeles, California
UP3425 • Found Nov 14, 1997
View case
Sex ✓Female
Age 70%Est. 65–75 vs 81 when missing
Race 100%White
Location 97%21 mi away, same county
TimingFound 9 years after last seen
Height 52%5'5"–5'7" vs 4'11"–5'1"
Weight 100%100–120 lb vs 95–105 lb
Hair 100%Gray vs Gray
Eyes 100%Brown vs Brown
75%Possible
Jane Doe — City Of Industry, California
UP3633 • Found Dec 19, 1994
View case
Sex ✓Female
Age 66%Est. 50–75 vs 81 when missing
Race 100%White
Location 100%5 mi away, same county
TimingFound 6 years after last seen
Height 100%4'8"–5'1" vs 4'11"–5'1"
Weight 0%203 lb vs 95–105 lb
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.

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