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Mary Ann Humfreville

The person at the center of this case

Mary Ann Humfreville

Case
#4545
SourceNamus MissingUpdated Sep 15, 2026
Ventura County Sheriff's Office - Major Crimes Investigations
Missing Person · Open
5 years waiting · since 2020

Missing Person: Mary Ann Humfreville

Justice for Mary Ann Humfreville — the trail went cold in 2020, but the truth hasn't.

Start here

Key leads to think about

🚗
vehicle
Lead #1

What vehicle was Mary Ann driving and where was it last seen?

⏰
timeline
Lead #2

Why was there a 4-day gap between last contact on December 15 and the case being reported on December 19?

👁️
witness
Lead #3

What did her son observe or know about Mary's plans or concerns before the call?

Mary Ann Humfreville, a 73-year-old woman, was last contacted on December 15, 2020, at her residence in Baja, Mexico. Her vehicle was missing while her wallet, pets, and belongings remained at her home, raising concerns about her safety. The Ventura County Sheriff's Office continues to investigate the circumstances of her disappearance.

Case
#4545
SourceNamus MissingUpdated Sep 15, 2026
Ventura County Sheriff's Office - Major Crimes Investigations

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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.

💡
clue
Lead #4

Were there any signs of forced departure or distress at her residence?

Have information about any of these leads?

Even the smallest detail could be the key to solving this case.

Official wording

Source Narrative

NamUs case MP139696. Missing person: Mary Ann Humfreville.

Last known contact: 2020-12-15 in Camarillo, Ventura, CA. Circumstances: Son from Camarillo spoke with Mary at her residence in Baja, Mexico.

Mary's wallet, pets, and belongings were at her residence, but her vehicle was missing. Suspicious At-Risk MP.

Demographics: 73 years, Female, White / Caucasian. Physical description: 5 ft 4 in, 275 lbs, hair: Gray or Partially Gray, eyes: Green.

Clothing and accessories: Clothing: Last seen wearing an unknown colored short sleeve shirt and unknown colored shorts.. Investigating agency: Ventura County Sheriff's Office-Major Crimes Investigations | 20-174499 | 2020-12-19.

Timeline of Events

👁️
2020-12-15

Last Known Contact

Son from Camarillo spoke with Mary at her residence in Baja, Mexico. Vehicle was missing; wallet, pets, and belongings remained at residence.

🕵️
2020-12-19

Case Reported

Ventura County Sheriff's Office opened Major Crimes investigation case 20-174499.

Key Locations
Interactive map showing important locations related to this case

Case Information

Incident:December 15, 2020
Last Updated:September 16, 2026

Have Information?

Any information, no matter how small, could be crucial to solving this case.

Phone: 8053838704
You can remain anonymous

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Case Information

Incident:December 15, 2020
Last Updated:September 16, 2026

Have Information?

Any information, no matter how small, could be crucial to solving this case.

Phone: 8053838704
You can remain anonymous