Stephan Mitchell Adams
Official status
| Status | MISSING |
|---|---|
| Classification | Official Missing Person · OSBI Cold Case · Law-enforcement/grand-jury assessment: suspected homicide (attributed, not adjudicated) |
| Missing since | 2004-12-13 |
| Case numbers | TPD 04-2317; OSBI CR04-180; NCIC M144557851; NamUs MP849; FBI ViCAP public profile |
| Vehicle | 1995 GMC Sierra pickup, white, Oklahoma tag SCQ-714; chrome bed rails, no taillight covers — NEVER RECOVERED |
| Status last checked | 2026-08-20 |
OSBI tip line: 800-522-8017 · tips@osbi.ok.gov (current as of December 2025 reporting)
Stephan Mitchell Adams was 26 when he disappeared on 13 December 2004, after finishing a final examination at Northeastern State University in Tahlequah. In a phone call with his girlfriend he said he was giving a man a ride to Keys, Oklahoma, and planned afterward to visit his mother in Webbers Falls. Investigators have since described phone activity associated with Keys and a reported sighting at a convenience store in the Cookson area, where witnesses were said to report that he was alone and drove north. He never reached his mother's home. He missed a work shift that evening and further examinations in the days after, and had no contact with anyone. Neither Adams nor his white 1995 GMC Sierra pickup has ever been found. He remains officially missing. The OSBI carries the case on its cold-case files, and local prosecutors have said publicly that they believe he was murdered — a belief, not a finding. A Cherokee County grand jury was reported in 2012 to have concluded that his disappearance was a homicide, while being unable to say who was responsible. This project has not obtained that report, and everything below that rests on it is presented as reporting about the report rather than as the report itself.
What the record shows
Adams was reported missing on 13 December 2004.
Adams completed an NSU final examination immediately before he disappeared.
Adams stated he was giving a man a ride to Keys, Oklahoma.
Adams intended to visit his mother in Webbers Falls.
Adams missed work, missed further final examinations, and had no contact with family or friends after 13 December 2004.
OSBI currently lists Adams as a missing-person cold case.
The Oklahoma Missing Person Index currently lists Adams as MISSING through Tahlequah Police.
The official vehicle description is a 1995 GMC Sierra pickup, white, Oklahoma tag SCQ-714, with chrome bed rails and no taillight covers.
Neither Adams nor the pickup has ever been recovered.
Official case identifiers are TPD 04-2317, OSBI CR04-180, NCIC M144557851 and NamUs MP849.
Adams's NSU final reportedly ended at approximately 10:45 a.m.
Adams's girlfriend reportedly called him at 11:07 a.m.
Contemporary reporting states the girlfriend heard another male voice in the pickup. The FBI does not publish this detail.
A relative's call at approximately 11:30 a.m. reportedly rang once and went to voicemail.
Adams reportedly had severe asthma and both inhalers were left at his residence. This must not be called formally inventoried physical evidence without an original police inventory.
Early reporting said no checking-account transactions had appeared and that family described him as having very little money and little gas. Long-term financial records are not available to this project and no long-term pattern may be inferred.
In the first weeks, investigators sought to identify a man seen near a Dollar General on East Downing, associated with an older dark Ford Ranger with a silver or chrome toolbox. No source describes him as a suspect.
A January 2005 report said officials acknowledged the family received a threatening phone call. The caller was never publicly identified and no connection to the disappearance has been publicly established.
An OHP dive team searched Kerr Reservoir on 20 December 2004 following a tip; contemporary reporting said nothing was found.
DA Jack Thorp stated that a call hit a cell tower in Keys. A tower hit establishes network association, not a precise location.
DA Jack Thorp described a Cookson-area convenience-store sighting in which witnesses reportedly said Adams was alone and left northbound.
Authorities searched a two-acre property near Keys in March 2014 using ground-penetrating radar and excavation; no recovery resulted.
Cherokee County District Attorney Jack Thorp has publicly stated that he believes Stephan Adams was murdered (2017 and 2021). This is a prosecutor's assessment, not a judicial finding. There has been no body recovery, no homicide conviction and no judicial finding identified by this project.
A Cherokee County grand jury was reported to have concluded in January 2012 that Adams was the victim of a homicide, that his body was somewhere in eastern Oklahoma, and that certain individuals had motive, while being unable to identify the killer or killers or the location of the body. THE SIGNED FINAL REPORT HAS NOT BEEN OBTAINED BY THIS PROJECT.
The case was reported in February 2021 to be before an Oklahoma City Multi-County Grand Jury. No public case-specific outcome has been located.
A source exists documenting a diver search of Dirty Creek in October 2023. The article has NOT been acquired. The trigger, agency, findings and any recovery result are all UNKNOWN and must not be inferred.
A source exists documenting a November 2021 article on the Cherokee Nation Attorney General and this case. The article has NOT been acquired; the AG's role and findings must not be inferred from the headline.
The January 2012 Cherokee County grand jury final report concluded that Adams "is likely a homicide victim" whose body is "probably somewhere in eastern Oklahoma". REPORTED BY the Tahlequah Daily Press, quoting the report. This project has NOT obtained the report itself.
The final report is reported to state that 62 witnesses testified and 35 exhibits were reviewed. See CONF-009 — witness counts differ substantially between sources and are NOT resolved to a single figure.
QUOTED EXCERPT OF THE REPORT, as reported by the Tahlequah Daily Press: the grand jury recommended prosecutors "pursue criminal charges against those individuals who clearly have lied while testifying under oath". This is a quotation of the report carried by a news article, not this project's characterisation, and it identifies no one.
QUOTED EXCERPT OF THE REPORT, as reported: "The people responsible for the presumed death of Stephen Adams likely testified before a Cherokee County grand jury." NewsOn6 independently reported near-identical wording, cross-confirming it. This names no one and is not a finding of guilt against any person.
No indictments were returned by the January 2012 Cherokee County grand jury.
The grand jury comprised 12 members and 3 alternates, was empanelled on 12 September 2011, and reconvened after a week-long break for additional investigation.
The grand jury was reported to have expected that the information it gathered "would ultimately lead to the arrest of the individual or individuals involved". As of the current research cutoff, no arrest has been publicly reported.
The grand jury investigation was triggered by a petition circulated by Adams's father in July 2011. Adams's father is publicly identified as Carl Adams in other reporting. This dates the previously recorded 2011 petition to July 2011.
Per December 2025 reporting, witnesses reported seeing Adams alone at a Cookson-area store before he drove toward Keys on State Highway 27. This adds specific routing detail; it does not contradict the existing Cookson / northbound account.
Per December 2025 reporting, the 2012 grand jury panel believed three individuals committed the homicide but heard no corroborating evidence. THE ORIGINAL REPORT'S EXACT WORDING ON THIS POINT HAS NOT BEEN INDEPENDENTLY CONFIRMED by this project. It identifies no one.
In December 2024, a volunteer sonar-search group known as Chaos Divers assisted investigators searching Dirty Creek. The team located a submerged vehicle and believed it might be Adams's white GMC truck; it was subsequently identified as a Nissan and RULED OUT. Adams's truck remains unrecovered.
Cherokee County District Attorney Jack Thorp, quoted in December 2025: "I will never stop pushing for justice in this case. I communicate regularly with Stephan's father, Carl." A prosecutor's statement of intent, not a judicial finding.
As of December 2025, no arrests have been made and investigators indicate persons of interest exist without corroborating evidence.
POSSIBLE MOTIVE CONTEXT — NOT A PROVEN MOTIVE. At the time he disappeared, Stephan Adams was involved in a long-running custody dispute concerning his daughter. In a 2017 interview with KJRH, Cherokee County District Attorney Jack Thorp said that two earlier molestation charges against Adams had been dismissed. This is reported here because it was published by a named reporter quoting a named public official, in an article that remains publicly available and is cited below. It is attributed to that reporting, and is not a finding of this project. A dismissed charge is not proof of guilt. It is also not necessarily proof of innocence of everything that was alleged — dismissal can happen for many reasons that a public record does not explain. Both of those statements are true at once, and neither should be read as implying the other. The existence and timing of the custody litigation has been discussed by family, investigators and journalists as possible context. It has never been established as a motive, and no person has been charged. No information identifying Adams's daughter, or any other private family member, appears anywhere in this file.
Reported route
| # | Place | Basis | Note |
|---|---|---|---|
| 1 | Northeastern State University, Tahlequah | STRONG CONTEMPORANEOUS REPORT | Final examination completed approximately 10:45 a.m. |
| 2 | Keys (stated ride destination) | INVESTIGATOR REPORTED | Adams said he was giving a man a ride to Keys. A call was later reported by DA Thorp to have hit a Keys cell tower — tower association, NOT GPS. |
| 3 | Cookson area convenience store | INVESTIGATOR REPORTED | Reported sighting: witnesses said Adams was ALONE and left NORTHBOUND. Last known sighting in the local investigative reconstruction. |
| 4 | Reported northbound departure — trail ends | INVESTIGATOR REPORTED | Direction of travel only. No destination is established. Adams and the truck leave the public record after this point. |
| — | Webbers Falls (intended destination — never reached) INTENDED — NEVER REACHED | OFFICIAL | He intended to visit his mother here. He never arrived. Shown separately because it is an intention, not a movement. |
Timeline
| approx. 10:45 a.m. | REPORTED | NSU final examination completed |
| 11:07 a.m. | REPORTED | Girlfriend call: says he is giving a man a ride to Keys |
| 11:07 a.m. | REPORTED | Contemporary reporting: girlfriend heard another male voice in the pickup |
| shortly after 11:07 a.m. | REPORTED | DA Jack Thorp: a call hit a cell tower in Keys |
| approx. 11:30 a.m. | REPORTED | Relative's call rings once, then voicemail |
| approx. 11:30 a.m. – noon | REPORTED | Reported Cookson-area convenience-store sighting — most significant publicly described post-NSU event |
| approx. noon | THEORY | Direction anomaly, and DA Thorp's 'dropped the rider then doubled back' hypothesis |
| after noon | REPORTED | No verified public communication from Adams after this point |
| 5:00 p.m. | REPORTED | Missed work shift at an El Chico restaurant |
| following days | CONFIRMED | Missed additional scheduled NSU final examinations |
| 2004-12-20 | REPORTED | OHP dive-team search of Kerr Reservoir near Sallisaw |
| January 2005 | REPORTED | Family received a threatening phone call |
| July 2011 | REPORTED | Family petitioned for a Cherokee County grand jury |
| January 2012 | REPORTED | Cherokee County grand jury final-report coverage: believed homicide |
| March 2014 | REPORTED | Two-acre property near Keys searched with GPR and excavation |
| February 2021 | REPORTED | Case reported to be before an Oklahoma City Multi-County Grand Jury |
| November 2021 | UNVERIFIED_LEAD | Indexed article: Cherokee Nation AG committed to solving the case |
| October 2023 | UNVERIFIED_LEAD | Indexed article: divers searched Dirty Creek |
| December 2025 | REPORTED | 21-years-later anniversary article: case still unresolved |
| August 2026 | CONFIRMED | Current status verified: still unresolved |
| 2004 | REPORTED | Stephan Mitchell Adams last seen leaving NSU |
Custody and family-court context
Search history
| Date | Who | Where | Method | Outcome |
|---|---|---|---|---|
| December 20, 2004 | Oklahoma Highway Patrol dive team | Kerr Lake / Robert S. Kerr Reservoir, near Sallisaw | Dive team search | NOTHING FOUND |
| March 2014 | Reported via District Attorney statement (Markdown attributes to Brian Kuester) | Two-acre property near Keys, Cherokee County | Ground-penetrating radar and excavation | NOTHING FOUND |
| October 2023 | UNKNOWN — not established in available sources | Dirty Creek | UNKNOWN — reported as a diver search in an article title only | OUTCOME UNKNOWN |
| December 2024 | Chaos Divers (volunteer sonar-search group) assisting investigators | Dirty Creek | Sonar search, with dive follow-up on a located target | NOTHING FOUND |
Where sources disagree
CONF-001 — name
| One source | Stephan (legal name) |
|---|---|
| Another | Stephen (spelling the family asked KJRH to use) |
| Used here | Stephan |
| Why | Legal name is used as the record's canonical title; the family-preferred spelling is stored and displayed alongside it, never discarded. |
CONF-002 — race
| One source | FBI ViCAP: White |
|---|---|
| Another | Oklahoma Missing Person Index: race code I (American Indian). Multiple local/secondary sources describe Adams as Native American. |
| Used here | neither — left unresolved |
| Why | No canonical value is set. Official databases classify this differently and the project does not adjudicate a person's identity. |
CONF-003 — vehicle make
| One source | FBI/OSBI: GMC |
|---|---|
| Another | Some local/secondary reports: Chevrolet |
| Used here | GMC |
| Why | Official FBI/OSBI description controls unless a primary vehicle-registration record proves otherwise. Secondary reports said Chevrolet; retained here so the choice is traceable rather than a silent overwrite. |
CONF-004 — vehicle plate
| One source | FBI/OSBI: SCQ-714 |
|---|---|
| Another | Some secondary databases: SEQ-714 |
| Used here | SCQ-714 |
| Why | Official FBI/OSBI value controls. SEQ-714 appears to be a secondary transcription variant; retained so the correction is traceable. |
CONF-005 — vehicle year
| One source | FBI/OSBI: 1995 |
|---|---|
| Another | Some secondary sources: 1998 |
| Used here | 1995 |
| Why | Official FBI/OSBI value controls unless a primary title record proves otherwise. Retained so the choice is traceable. |
CONF-006 — last sighting
| One source | FBI public profile: last seen leaving NSU |
|---|---|
| Another | Later local DA reconstruction: witness sighting at a Cookson-area convenience store |
| Used here | neither — left unresolved |
| Why | No canonical value set. These may not truly contradict - the FBI profile is an earlier/simpler official summary and the DA reconstruction reflects an investigation that developed later. |
CONF-007 — work location
| One source | One Dec. 2004 report: El Chico in Muskogee |
|---|---|
| Another | Another Dec. 2004 report: El Chico in Tahlequah |
| Used here | neither — left unresolved |
| Why | No canonical value set. Needs employment/payroll records or the original reporting to resolve. |
CONF-008 — date missing
| One source | Doe Network index: Dec. 3, 2004 |
|---|---|
| Another | All authoritative case sources: Dec. 13, 2004 |
| Used here | 2004-12-13 |
| Why | Authoritative sources (FBI ViCAP, OSBI, Oklahoma Missing Person Index) all use December 13, 2004. The Doe Network value is treated as an apparent secondary database error, recorded rather than silently ignored. |
CONF-009 — grand jury witness count
| One source | Contemporaneous January 2012 reporting: 'more than 50 witnesses'. Tahlequah Daily Press and NewsOn6 (Jan 2012), quoting the final report: '62 witnesses' and 35 exhibits. |
|---|---|
| Another | Later KJRH reporting (2017): 'more than 60 testimonies'. Other secondary material: '64'. Tahlequah Daily Press (Dec 2025): '83 witnesses'. |
| Used here | neither — left unresolved |
| Why | NO canonical figure is set. The reported witness count varies substantially by source (50+ / 60+ / 62 / 64 / 83) and the project has not obtained the final report, which is the only document that could settle it. Present as an unresolved RANGE, never as a single number. |
Unanswered questions
- Stephan Adams maximum-depth investigation (TCF-011)
- Who was the man Adams said he was taking to Keys?
- Was the girlfriend's male-voice observation formally documented in a police statement?
- What exact cell tower/sector handled the 11:07 call?
- Is the 11:30 phone behaviour documented in carrier records?
- What is the exact Cookson convenience store?
- Are the Cookson witnesses' original statements still preserved?
- What did Adams buy at the store, and was there a receipt or video?
- What exact direction/road did the Cookson witnesses observe?
- Why was he reportedly northbound if he intended to continue toward Webbers Falls?
- Was the mystery Ford Ranger man ever identified?
- Was the threatening caller ever identified or traced?
- What facts caused the 2012 grand jury to conclude homicide?
- What did the grand jury mean by 'certain individuals' having motive?
- What witnesses did the grand jury believe were untruthful, if that is in the public final report?
- What triggered the March 2014 Keys property search?
- What triggered the 2021 Multi-County Grand Jury review?
- What action or outcome followed the 2021 Multi-County Grand Jury review?
- What exactly did Cherokee Nation authorities take over or assist with after 2020/2021?
- What triggered the 2023 Dirty Creek diver search?
- What were the Dirty Creek search results?
- Has the GMC's VIN/title/registration ever generated a hit since 2004?
- Has the plate SCQ-714 ever been reissued, and what historical registration data survives?
- Which waterways, ponds, creeks and reservoirs on the plausible route have actually been searched?
- Which were searched with sonar vs. divers vs. visual inspection?
- Which unidentified-remains cases have officially ruled Adams out?
- What is the current DNA/dental/fingerprint status in NamUs?
- Does the case have family-reference DNA on file?
- What exact court event was pending days after his disappearance?
- What was Adams's actual work location and employer record?
- What publicly releasable TPD/OSBI reports can be obtained now?
- Where was the unknown rider picked up?
- Where was the unknown rider dropped off, if he was dropped off?
- Did any Cookson-area witness report seeing a passenger in the truck?
- Was there any surveillance video along the route or at the Cookson store?
- What were the exact words of the January 2005 threatening call?
- Did investigators establish any connection between the threatening call and the disappearance?
- Did the 2021 Multi-County Grand Jury return any indictment, presentment or public report?
- Was jurisdiction transferred to another body, or was the matter closed confidentially?
- What releasable Cherokee Nation Governmental Records Act records exist for this case?
- What is the Cherokee Nation Attorney General's and Marshal Service's actual role in the case?
Sources
- SRC-001 — FBI ViCAP profile
https://www.fbi.gov/wanted/vicap/missing-persons/stephan-mitchell-adams - SRC-002 — FBI ViCAP poster
https://www.fbi.gov/wanted/vicap/missing-persons/stephan-mitchell-adams/adams-4-17-2020.pdf - SRC-003 — OSBI Cold Case Files A-B
https://oklahoma.gov/osbi/services/investigative-services-division/cold-case-files/cold-cases/cold-case-files-a-b.html - SRC-004 — Oklahoma Missing Person Index
https://okmissing.osbi.ok.gov/SEARCH_PERSON_PUBLIC - SRC-005 — KJRH 2017 cold-case reconstruction
https://www.kjrh.com/news/cold-case-stephen-adams-family-still-looking-for-his-body-after-2004-disappearance - SRC-006 — KJRH family follow-up
https://www.kjrh.com/news/local-news/muskogee-county-family-searching-for-answers-in-cold-case - SRC-007 — Eastern Times-Register 2021
https://www.easterntimesregister.com/2021/02/10/case-of-stephan-adams-remains-a-mystery/ - SRC-008 — Oklahoma AG Multi-County Grand Jury overview
https://oklahoma.gov/oag/about/divisions/more/mcgjury.html - SRC-009 — KXMX archived March 2014 report
https://arklahoma.blogspot.com/2014/03/?m=0 - SRC-010 — Sequoyah County Times 2025 anniversary article
https://www.sequoyahcountytimes.com/2025/12/11/21-years-later-mystery-still-surrounds-adams-disappearance/ - SRC-011 — Trace Evidence source inventory
https://www.trace-evidence.com/sadams - SRC-012 — Charley Project
https://charleyproject.org/case/stephan-mitchell-adams - SRC-013 — Uncovered case index
https://uncovered.com/cases/stephan-adams - SRC-014 — Doe Network Oklahoma male index
https://www.doenetwork.org/mp-geo-us-males.php - SRC-015 — Contemporary Dec. 2004/Jan. 2005 reports preserved in Websleuths
- SRC-016 — News on 6: OSBI Offers Larger Reward In Case Of Missing Tahlequah Man (Apr. 29, 2020)
- SRC-017 — Tahlequah Daily Press: CRIME REWIND - Prosecutors still receiving tips on missing NSU student (Sept. 30, 2021)
- SRC-018 — Sequoyah County Times: Cherokee Nation AG committed to solving Stephan Adams Case (Nov. 10, 2021)
- SRC-019 — Sequoyah County Times: Divers search Dirty Creek for Stephan Adams (Oct. 19/20, 2023)
- SRC-020 — Fox News reader mail (2006)
- SRC-021 — Tahlequah Daily Press: 'Panel: Adams' killer was likely among witnesses' — Josh Newton, 16 January 2012
https://www.tahlequahdailypress.com/news/local_news/panel-adams-killer-was-likely-among-witnesses/article_34c1f41b-61cb-5595-9dad-f42fcfe75db9.html - SRC-022 — NewsOn6: 'Cherokee County Grand Jury Issues Final Report On Stephen Adams' Disappearance' — 17 January 2012
https://www.newson6.com/story/5e3652152f69d76f62068d03/cherokee-county-grand-jury-issues-final-report-on-stephen-adams-disappearance - SRC-023 — Tahlequah Daily Press: 'Stephan Adams still a priority 21 years later' — Keri Gordon, 10 December 2025
https://www.tahlequahdailypress.com/news/stephan-adams-still-a-priority-21-years-later/article_6eb1260a-11c1-4940-ab48-5a5261c5fdf9.html