Overview

• Full name: Robert Curtis Coe
• Age at disappearance: 23
• Date of birth: February 19, 1955
• Date last seen: March 12, 1978
• Last known location: 500 block of East Monroe Street, Bouldin Creek neighborhood
• City: Austin
• County: Travis County
• State: Texas
• Case classification: Endangered missing person; foul play suspected
• Current status: Unsolved
• NamUs identification number: MP9222
• Circumstances: Robert was last seen walking away from the duplex he shared with roommates. He did not return, and his subsequent movements have not been publicly established.

Detailed Case Breakdown

Robert Curtis Coe: The Unsolved 1978 Disappearance of a University of Texas Student in Austin

On March 12, 1978, 23-year-old Robert Curtis Coe walked away from his residence in the Bouldin Creek neighborhood of Austin, Texas. His roommates reportedly witnessed his departure from the duplex where he lived. Robert never returned, and his whereabouts remain unknown.

At the time, Robert was a student at the University of Texas at Austin. His disappearance left behind a mystery that has endured for more than four decades, with few publicly documented investigative developments.

Although foul play has been suspected, there is no publicly verified evidence establishing that Robert was murdered. His case remains an unresolved missing-person investigation.

Case Summary

• Full name: Robert Curtis Coe
• Age at disappearance: 23
• Date of birth: February 19, 1955
• Date last seen: March 12, 1978
• Last known location: 500 block of East Monroe Street, Bouldin Creek neighborhood
• City: Austin
• County: Travis County
• State: Texas
• Case classification: Endangered missing person; foul play suspected
• Current status: Unsolved
• NamUs identification number: MP9222
• Circumstances: Robert was last seen walking away from the duplex he shared with roommates. He did not return, and his subsequent movements have not been publicly established.

These details are documented in the Uncovered case profile and historical missing-person information reproduced by Websleuths.

Background: Who Was Robert Curtis Coe?

Robert Curtis Coe was born on February 19, 1955. By March 1978, he was 23 years old and attending the University of Texas at Austin.

He lived with roommates in a duplex on East Monroe Street in South Austin’s Bouldin Creek neighborhood, an established residential area near the city’s central districts.

Publicly available accounts provide relatively little information about Robert’s childhood, family relationships, academic interests, or daily activities. No detailed, independently verified family biography was located in the sources reviewed.

Historical missing-person descriptions identify Robert as a white male with brown hair and blue eyes. His reported height ranges from approximately 5 feet 10 inches to 6 feet 1 inch, with his weight listed between 155 and 165 pounds.

Robert’s missing-person information also references depression and a disability classification. The Charley Project’s 2016 commentary noted that the precise basis for the disability designation was unclear. These details are relevant to understanding the historical case record but do not establish why he disappeared.

The limited surviving public record makes it especially important to distinguish what is known about Robert’s life from speculation about his disappearance.

March 12, 1978: The Disappearance in Austin

The central documented event occurred on Sunday, March 12, 1978.

According to missing-person accounts, Robert’s roommates saw him walking away from their residence in the 500 block of East Monroe Street. The duplex was located in the Bouldin Creek neighborhood of South Austin.

He was not reported to be traveling with another person in the available descriptions. No confirmed destination or explanation for his departure has been publicly established.

Robert never returned to the residence, and no subsequent verified sighting has been documented in the sources reviewed.

Clothing and physical description

Historical missing-person information describes Robert as possibly wearing the following clothing when he disappeared:

• A gray and blue plaid flannel shirt
• Blue jeans
• Brown leather loafers
• Possibly a brown suede jacket with lamb lining

The jacket is described as a possibility rather than a confirmed item of clothing.

These descriptions may help individuals who knew Robert in 1978 recognize the circumstances surrounding his disappearance. However, clothing details from a decades-old case should not be treated as evidence of his later whereabouts.

The publicly documented account does not establish whether Robert carried identification, money, luggage, or other personal belongings when he left the duplex.

Investigation History and Available Evidence

Robert’s disappearance became a long-running missing-person case associated with Austin law enforcement and Texas missing-person records.

The available public documentation confirms his missing status but provides limited detail about the original investigation.

Initial investigation and witness information

The most significant publicly described witness information comes from Robert’s roommates, who reportedly saw him leave their shared residence.

Their account establishes his last reported location but does not explain what happened afterward.

The reviewed sources do not provide a verified chronology of the initial police response, interviews, neighborhood searches, or investigative steps undertaken immediately after March 12, 1978.

There is also insufficient publicly verified information to establish whether authorities identified any vehicle, individual, or destination connected to Robert’s disappearance.

Physical and forensic evidence

No publicly verified inventory of physical evidence associated with Robert’s disappearance was located in the reviewed case sources.

The available information does not establish that investigators recovered clothing, personal property, or other physical evidence capable of explaining what happened to him.

A discussion on Websleuths includes a reported response concerning a comparison between Robert’s missing-person record and an unidentified-person case. The post states that Robert’s mother’s DNA was entered into CODIS in 2007 and that fingerprint records were available for comparison.

The discussion also reports that unidentified-person record UP4428 was excluded as a match. Because this information appears in a community discussion rather than a directly accessible official laboratory or NamUs report, it should be treated as a secondary account, not independently confirmed forensic findings.

There is no verified public announcement in the reviewed sources of a successful DNA identification, genetic-genealogy breakthrough, or recovery of Robert’s remains.

Suspects and persons of interest

No officially identified suspect or person of interest was located in the publicly available material reviewed.

There is no verified public record in these sources of an arrest, criminal charge, or homicide prosecution directly associated with Robert Curtis Coe’s disappearance.

This does not establish that investigators have never pursued leads. It means that specific investigative actions cannot be responsibly described without supporting records.

Theories and Unresolved Questions

Several possible explanations could account for Robert’s disappearance, but none has been established as fact.

Possibility of foul play

The Charley Project’s published commentary states that foul play is suspected in Robert’s disappearance.

That concern is relevant because Robert left his residence and was never reliably heard from again. However, suspicion alone is not proof of abduction, murder, or another crime.

No verified evidence in the reviewed sources identifies an offender, motive, or confirmed criminal event.

Possibility of a voluntary departure

Because Robert was observed walking away from his residence, one possibility is that he initially left voluntarily.

However, an ordinary departure does not establish that a person intended to disappear permanently. There is no verified evidence that Robert planned to abandon his education, residence, or personal relationships.

A voluntary departure therefore remains a possibility, not a documented conclusion.

Medical or accidental circumstances

Robert’s reported history of depression and his historical disability classification may have been relevant considerations for investigators.

Nevertheless, neither a medical emergency nor an accidental death has been established. It would be inappropriate to assume that his mental health caused his disappearance.

Questions that remain unanswered

The central questions are where Robert intended to go on March 12, 1978, whether anyone encountered him after he left East Monroe Street, and what happened during the hours and days that followed.

Other unresolved issues include whether investigators received credible later sightings, whether any original physical evidence survives, and whether modern identification techniques could provide new information.

Without verified investigative findings, these remain open questions rather than established leads.

Latest Publicly Available Investigative Updates

As of October 18, 2026, Robert Curtis Coe’s disappearance remains unresolved in the publicly accessible records reviewed.

Several historical and more recent case listings help document the continuing search for answers, although they do not establish that new investigative breakthroughs have occurred.

October 17, 2001: Texas missing-person photograph update

The Texas Department of Public Safety’s official missing-person bulletin records October 17, 2001, as the date Robert’s photograph was updated.

The bulletin identifies his case as M8905012 and confirms that he was last seen in Austin on March 12, 1978.

This was a recorded photograph update, not evidence of a new sighting or investigative discovery.

July 17, 2016: Renewed public awareness

The Charley Project Blog published an article titled Select It Sunday: Robert Coe.

The article revisited Robert’s disappearance, his University of Texas enrollment, and the limited information available about his case.

The post helped preserve public awareness but did not report a new witness, identification, or confirmed investigative breakthrough.

June 14, 2019: Charley Project case information updated

The Charley Project’s case profile identifies June 14, 2019, as its last recorded update, noting a revision to Robert’s distinguishing characteristics.

The profile lists scars on both wrists and continues to classify him as endangered missing.

This was a case-profile update, not a newly reported investigative finding.

2023: Doe Network record update

The Doe Network’s archived 2023 updates include Robert Curtis Coe, identified as case 55DMTX, among cases whose information was updated.

The archive does not establish that this entry represented a new lead or discovery.

July 27, 2024: Uncovered case-profile update

The missing-person awareness platform Uncovered lists July 27, 2024, as the last update to its Robert Coe case page.

The listing continues to identify him as missing and includes his NamUs reference, MP9222.

The date represents an update to the public case listing rather than confirmation of new investigative activity.

Current investigative status

No publicly confirmed recent developments were located establishing any of the following: a new suspect, arrest, criminal charge, identification of remains, successful DNA identification, or resolution of Robert’s disappearance.

The reviewed sources also did not establish a recently announced official cold-case reopening or new forensic testing initiative.

These limitations do not necessarily mean that law enforcement has stopped investigating. Some investigative work may remain confidential or unavailable through public records.

The most reliable current public case reference located is the Texas DPS Missing Persons Clearinghouse bulletin, which continues to display Robert’s missing-person information.

Conclusion: The Search for Answers Continues

More than 48 years have passed since Robert Curtis Coe was last seen walking away from his South Austin home.

He was only 23 years old, a university student with much of his adult life still ahead of him. What happened after he left the duplex on East Monroe Street remains unknown.

The case has attracted occasional public attention through missing-person organizations and community discussions, but no verified information has established his fate.

Even after decades, a previously unreported observation, preserved record, or credible piece of information could help investigators reconstruct Robert’s final known movements.

Anyone with information about Robert Curtis Coe’s disappearance on March 12, 1978, is encouraged to contact the Austin Police Department at 512-974-6644, as listed by the Charley Project, or the Texas Department of Public Safety Missing Persons Clearinghouse at 800-346-3243.

Information should be reported directly to authorities rather than presented publicly as an established fact.

Robert’s disappearance remains an unresolved missing-person case, and the need for reliable answers continues.