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 (MP37611) and 3 other sources
Robert Mark Schaaf, a 58-year-old man from Mill Valley, California, went missing on December 3, 2016. At the time of his disappearance, Schaaf was described as a Caucasian male with brown hair, standing 5'8" and weighing around 150 pounds. He was last seen wearing a plaid jacket with a gray hood, a blue T-shirt, and jeans. There have been no significant developments or clues about his whereabouts since he was last reported missing.

Despite ongoing efforts to locate him, Schaaf's case remains unsolved. The National Missing and Unidentified Persons System (NamUs) lists his disappearance, and authorities continue to encourage anyone with information to come forward. Schaaf's disappearance has left his family and local community searching for answers, but no substantial leads have emerged in the years following his last sighting. His case remains open, with law enforcement and concerned citizens still hoping for new information to surface.
Last Seen: Dec 3, 2016

Possible Unidentified Matches (6)

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.

83%Moderate
John Doe — San Francisco, California
UP91361 • Found Feb 5, 2022
View case
Sex ✓Male
Age 100%Est. 60–70 vs 58 when missing
Race 100%White
Location 100%9 mi away, same state
TimingFound 5 years after last seen
Height 100%5'9" vs 5'8"
Weight 63%191 lb vs 150 lb
Hair 40%Gray vs Brown
Eyes 100%Brown vs Brown
82%Moderate
John Doe — Millbrae, California - unidentified case UP16409
John Doe — Millbrae, California
UP16409 • Found Feb 23, 2017
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Sex ✓Male
Age 85%Est. 60–80 vs 58
Race 100%White
Location 97%23 mi away, same state
TimingFound 3 months after last seen
Height 100%5'7" vs 5'8"
Weight 80%120 lb vs 150 lb
Hair 40%Gray vs Brown
Eyes 100%Brown vs Brown
81%Moderate
John Doe — Milpitas, California
UP72156 • Found Jun 14, 2018
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Sex ✓Male
Age 100%Est. 50–60 vs 58 when missing
Race 100%White
Location 90%48 mi away, same state
TimingFound 18 months after last seen
Height 100%5'7"–5'11" vs 5'8"
78%Possible
John Doe — Milpitas, California - unidentified case UP59937
John Doe — Milpitas, California
UP59937 • Found Sep 29, 2018
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Sex ✓Male
Age 100%Est. 55–70 vs 58 when missing
Race 100%White
Location 90%48 mi away, same state
TimingFound 22 months after last seen
Height 68%5'11" vs 5'8"
Weight 73%115 lb vs 150 lb
Hair 40%Gray vs Brown
Eyes 60%Hazel vs Brown
76%Possible
John Doe — Stockton, California
UP87371 • Found Sep 7, 2021
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Sex ✓Male
Age 100%Est. 50–60 vs 58 when missing
Race 60%Hispanic
Location 84%69 mi away, same state
TimingFound 5 years after last seen
Height 100%5'9"–6'0" vs 5'8"
Weight 100%161–170 lb vs 150 lb
Hair 40%Gray vs Brown
Eyes 100%Brown vs Brown
76%Possible
John Doe — San Jose, California - unidentified case UP57876
John Doe — San Jose, California
UP57876 • Found Oct 15, 2017
View case
Sex ✓Male
Age 100%Est. 48–62 vs 58
Race 100%White
Location 88%53 mi away, same state
TimingFound 10 months after last seen
Height 68%5'11" vs 5'8"
Weight 0%260 lb vs 150 lb
Hair 40%Gray 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.

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