Overview

Full name: Theresa Elizabeth Baxter

Age at disappearance: 38 years old

Date of birth: October 23, 1938

Date last seen: June 1, 1977, according to California Department of Justice records; other accounts place her disappearance in August 1977

Last known location: Huntington Beach, Orange County, California

Classification: Endangered missing; suspicious circumstances

Current status: Missing, unresolved

Physical description: Theresa was described as a white woman, approximately 5 feet 2 inches tall and weighing 125 pounds, with brown hair and brown eyes. Authorities also list Geraldine Tootle as a possible alias.

Main circumstances: Theresa disappeared while her two daughters were away from home. Their father claimed she had left with another man. Years later, one daughter reported her missing, prompting an investigation that failed to establish her whereabouts.

The California Department of Justice lists June 1, 1977, as her last-seen date, while historical reporting and The Charley Project describe an August disappearance. The precise date has not been conclusively established in the publicly available information.

Detailed Case Breakdown

Theresa Elizabeth Baxter: The Unsolved 1977 Disappearance of a California Mother in Huntington Beach

In the summer of 1977, 38-year-old Theresa Elizabeth Baxter vanished from Huntington Beach, California, leaving behind two daughters and questions that have remained unanswered for nearly five decades.

When her daughters returned home from a trip to the beach, their father told them that Theresa had left with another man. But Theresa’s disappearance troubled her younger daughter, Marie Plata, who later discovered her mother’s purse and driver’s license hidden in the family home’s attic.

More than a decade passed before Marie formally reported her mother missing in 1988. Investigators subsequently searched for evidence that Theresa had established a life elsewhere, but they could not locate her.

Today, Theresa’s disappearance remains an unresolved missing-person investigation. Her daughter’s suspicions have raised questions about what happened inside the family home, but no one has been charged in connection with her disappearance.

Sources: The Charley Project; Orange Coast.

Case Summary

Full name: Theresa Elizabeth Baxter

Age at disappearance: 38 years old

Date of birth: October 23, 1938

Date last seen: June 1, 1977, according to California Department of Justice records; other accounts place her disappearance in August 1977

Last known location: Huntington Beach, Orange County, California

Classification: Endangered missing; suspicious circumstances

Current status: Missing, unresolved

Physical description: Theresa was described as a white woman, approximately 5 feet 2 inches tall and weighing 125 pounds, with brown hair and brown eyes. Authorities also list Geraldine Tootle as a possible alias.

Main circumstances: Theresa disappeared while her two daughters were away from home. Their father claimed she had left with another man. Years later, one daughter reported her missing, prompting an investigation that failed to establish her whereabouts.

The California Department of Justice lists June 1, 1977, as her last-seen date, while historical reporting and The Charley Project describe an August disappearance. The precise date has not been conclusively established in the publicly available information.

Source: California Department of Justice case record.

Theresa Baxter’s Background and Family Life

Before her disappearance, Theresa Elizabeth Baxter was a mother raising two daughters in Huntington Beach, a coastal city in Orange County, California.

Her younger daughter, Marie Plata, was approximately 12 years old when Theresa vanished. Marie later described her mother as a caring and involved parent who helped with homework, prepared meals, and participated in Girl Scout activities.

These memories became an important part of the public understanding of Theresa’s case. According to Marie, her mother had been a consistent presence in her children’s lives before suddenly disappearing.

However, the household also experienced significant conflict.

Marie described her parents’ marriage as troubled and said her father frequently displayed anger and violent behavior. She recalled that her mother had previously left the household with the children, although they eventually returned.

These descriptions are based on Marie’s recollections, as documented by journalist reporting and missing-person case summaries. They provide context for the family’s circumstances but do not independently establish what caused Theresa’s disappearance.

In its coverage, Orange Coast magazine characterized Theresa as a devoted mother whose sudden absence remained deeply troubling to her daughter.

Source: Orange Coast – Theresa Baxter.

The Disappearance in 1977

According to Marie’s account, she and her older sister spent a day at the beach in the summer of 1977.

When the girls returned to their Huntington Beach home, their father told them their mother had left with another man.

Theresa was not there to explain what had happened, and her daughters never heard from her again.

The father’s explanation became one of the central unresolved elements of the case. No publicly verified evidence establishes that Theresa voluntarily left to begin a new relationship.

Marie later searched the family home for clues. In the attic, she discovered her mother’s purse and driver’s license.

The discovery concerned her because those belongings remained behind despite the explanation that Theresa had voluntarily departed.

The available accounts do not establish when the items were placed in the attic, who placed them there, or whether investigators later subjected them to forensic examination.

Marie’s relationship with her father deteriorated, and she eventually ran away from home and entered foster care.

Theresa’s husband did not report her missing. It was Marie who eventually contacted authorities in 1988.

This lengthy delay created an investigative challenge: by the time police formally examined the disappearance, approximately eleven years had passed.

Sources: The Charley Project; Orange Coast investigation.

Investigation History and Evidence

The 1988 Missing-Person Report

In 1988, Marie Plata contacted the Huntington Beach Police Department about her mother’s disappearance.

Marie was preparing to get married and hoped to find Theresa or, at the very least, let her know that she was safe and beginning a new chapter of her life.

Huntington Beach Detective Don Howell subsequently investigated the case.

Howell initially believed that finding Theresa might be possible because investigators possessed identifying information, including her Social Security number and fingerprints.

According to Orange Coast, Theresa’s fingerprints were available because of a minor shoplifting arrest earlier in her life.

Despite these records, the investigation did not establish that she had been living elsewhere in the United States after 1977.

Detective Don Howell’s Investigation

Howell conducted a broad investigation intended to determine whether Theresa had voluntarily disappeared, changed her identity, or encountered circumstances that prevented her from contacting her family.

His investigative work included:

• Reviewing Theresa’s banking activity.
• Interviewing relatives, friends, and neighbors.
• Distributing missing-person flyers.
• Searching historical law enforcement records for possible encounters involving Theresa.
• Reviewing available identifying information, including fingerprints and her Social Security number.

The investigation did not produce a verified explanation for her disappearance.

Howell also examined the circumstances involving Theresa’s husband.

In the Orange Coast interview published June 8, 2017, Howell said the husband’s apparent indifference during interviews had caused him to become suspicious.

However, suspicion did not establish criminal responsibility. No criminal charges were filed against Theresa’s husband in connection with her disappearance.

By the time the article was published, her husband had died.

Source: Orange Coast – Vanished: Orange County’s Most Infamous Cold Cases | Theresa Baxter.

Physical and Forensic Evidence

The most notable physical items described publicly are Theresa’s purse and driver’s license, which Marie reported finding in the attic.

Their presence raised questions about the circumstances of Theresa’s departure, but publicly available reporting does not establish that either item contained forensic evidence of a crime.

Investigators also possessed fingerprints and identifying records that could assist in determining whether Theresa had encountered law enforcement or appeared in official records elsewhere.

No publicly verified reports were located establishing that investigators recovered Theresa’s remains, identified biological evidence proving a homicide, or obtained a conclusive DNA match.

Similarly, no case-specific public announcement was located confirming the use of investigative genetic genealogy or a recent forensic breakthrough.

These limitations do not establish that such investigative techniques have never been considered or used. They mean their application to Theresa’s case could not be verified from available public sources.

Theories and Unresolved Questions

Theory 1: Theresa Voluntarily Left Her Family

The initial explanation provided by Theresa’s husband was that she had left with another man.

That account is documented through Marie’s recollections. It has not been independently verified as an accurate description of what occurred.

A voluntary departure remains a possibility, but several circumstances complicate that explanation.

Theresa’s daughters never received confirmed communication from her afterward. Marie also found her mother’s purse and driver’s license in the attic, and the subsequent police investigation failed to establish a traceable life elsewhere.

None of these circumstances conclusively rules out voluntary disappearance, but together they explain why the case has remained suspicious.

Theory 2: Theresa Was the Victim of Foul Play

Marie Plata has publicly expressed concern that her father may have killed Theresa or arranged for someone else to harm her.

Her belief was influenced by her recollections of conflict in the marriage, her father’s behavior, and the circumstances surrounding her mother’s disappearance.

Detective Howell also described becoming suspicious of Theresa’s husband during his investigation.

These are documented suspicions, not findings of guilt.

No verified public evidence establishes that Theresa was murdered, and her husband was never charged with a crime related to the disappearance.

It would therefore be inaccurate to describe the case as a confirmed homicide.

Questions That Remain Unanswered

Several fundamental questions remain unresolved:

• What was Theresa’s exact last-seen date in 1977?
• Did anyone outside the immediate household see or speak with her shortly before she vanished?
• Why were her purse and driver’s license reportedly left in the attic?
• Did she leave Huntington Beach voluntarily, or was she prevented from contacting her daughters?
• Could surviving records, witnesses, or forensic evidence provide new information about her whereabouts?

These are investigative questions, not assertions that undisclosed evidence exists.

Source: The Charley Project case profile.

Latest Publicly Available Investigative Updates

Research reviewed through October 18, 2026

Official Case Status

The California Department of Justice continues to maintain a missing-person listing for Theresa Elizabeth Baxter.

The state record identifies the Huntington Beach Police Department as the reporting agency and lists official case number 8822689.

The state’s last-seen date remains June 1, 1977.

The Charley Project continues to classify Theresa as endangered missing, describing her disappearance as unresolved and occurring under suspicious circumstances.

No publicly confirmed recent investigative breakthroughs, arrests, identification of remains, or case resolution were located during this research.

Source: California DOJ official listing.

Historical Reporting and Case Profile Updates

On June 8, 2017, Orange Coast published Miles Corwin’s reporting on Theresa’s disappearance as part of its coverage of Orange County cold cases.

The article documented Detective Howell’s investigation and Marie’s continued hope of learning what happened to her mother.

The online article currently displays an August 21, 2025, update date. However, no new investigative development could be verified from that page update.

The Charley Project identifies June 16, 2017, as the date of its last substantive profile update, which included revisions to disappearance details and an age-progression image.

An age-progression image is intended to help people recognize how a missing individual might have appeared at a later age. Its publication is not evidence of a confirmed sighting.

Sources: Orange Coast; The Charley Project.

DNA Testing and Cold-Case Possibilities

Modern investigative techniques, including forensic DNA comparisons and genetic genealogy, have helped resolve some long-standing missing-person and unidentified-remains investigations.

California’s Missing Persons DNA Program can compare relevant DNA profiles to assist with identifications.

However, no publicly confirmed information was located showing that genetic genealogy has produced a lead in Theresa Baxter’s disappearance.

It would be premature to suggest that a new DNA analysis, suspect identification, or forensic review is underway without an official announcement.

Source: California DOJ Missing Persons.

Conclusion: The Search for Answers in Theresa Baxter’s Disappearance

Nearly half a century after Theresa Elizabeth Baxter disappeared from Huntington Beach, the central question remains unanswered: what happened to the mother who never returned to her daughters?

The available evidence establishes that Theresa vanished in 1977, that her daughter reported her missing in 1988, and that a subsequent police investigation failed to determine her whereabouts.

It does not establish whether she voluntarily disappeared, died under unknown circumstances, or became the victim of a crime.

For Marie Plata, the disappearance has represented decades of uncertainty. Her public statements reflect both her fears about what may have happened and her continuing hope for answers.

Theresa’s case remains an important reminder that unresolved disappearances are not simply historical mysteries. They affect families and communities long after the original events.

Anyone with information about Theresa Elizabeth Baxter’s disappearance, her possible whereabouts after 1977, or the circumstances surrounding her departure from Huntington Beach is encouraged to contact the Huntington Beach Police Department at (714) 536-5951.

Information can also be provided through California’s missing-person hotline at 1-800-222-FIND (1-800-222-3463).

Even information that appears minor may be relevant when evaluated by investigators.