The person at the center of this case
Mary Alice Helm
Missing Person · Open
19 years waiting · since 2007
Missing Person: Mary Alice Helm
Justice for Mary Alice Helm — the trail went cold in 2007, but the truth hasn't.
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Key leads to think about
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witness
Lead #1What did the friends she was staying with observe about her departure or plans that day?
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evidence
Lead #2Were there any search efforts conducted in the Alta area, and what terrain or locations were prioritized?
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clue
Lead #3Has anyone reported seeing a woman matching her description (5'4", brown hair and eyes, tan suede coat with green collar, white tennis shoes with pink trim) in the area after January 20, 2007?
Mary Alice Helm, a 44-year-old woman, disappeared on January 20, 2007, while staying with friends in Alta, California and went out for a walk from which she never returned. Nearly two decades later, the circumstances of her disappearance remain unclear, with no confirmed sightings or evidence establishing what happened after she left the residence. Her case remains open with the Placer County Sheriff's Office, and anyone with information about her whereabouts or activities that day is urged to come forward.
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
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location
Lead #4What specific route or destination might she have taken on her walk from the residence?
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Official wording
Source Narrative
NamUs case MP3913. Missing person: Mary Alice Helm.
Last known contact: 2007-01-20 in Alta, Placer, CA. Circumstances: Ms.
Helm was staying with friends in the Alta area. She was home alone and apparently went for a walk.
Demographics: 44 years, Female, White / Caucasian. Physical description: 5 ft 4 in, 160 lbs, hair: Brown, eyes: Brown.
Clothing and accessories: Clothing: tan suede coat with green collar; Footwear: white tennis shoes with pink trim. Investigating agency: Placer County Sheriff's Office | 07-976 | 2007-01-20.
Timeline of Events
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2007-01-20
Mary Alice Helm goes missing
Ms. Helm was staying with friends in the Alta area, was home alone, and apparently went for a walk from which she did not return.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:January 20, 2007
Last Updated:September 26, 2026
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Phone: 5308897800
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Case Information
Incident:January 20, 2007
Last Updated:September 26, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 5308897800
You can remain anonymous