The David Glenn Lewis disappearance, and belated rediscovery, is one of the most perplexing cases The Intelligence Shop has ever analyzed. The analysis led to a lesser examined theory for his departure and one that might be considered in future similar cases.
The David Glenn Lewis case came to a mixed conclusion in 2004 when Lewis was finally identified as the John Doe of a fatal hit-and-run that occurred in Yakima, Washington, on 1 February 1993. He was last seen in Amarillo, Texas, on 31 January 1993. On one hand, the mystery as to where Lewis disappeared was solved. On the other, no one has ever been able to account for his travel 1,600 miles from home.
David Glenn Lewis
David Glenn Lewis, 39, was a prominent attorney and former judge in the Amarillo, Texas, area. An article from the Fort Worth Star-Telegram described Lewis as “the ultimate nice guy and family man,”1 deeply involved in both his church and his community. Lewis was married, and the father of a nine-year-old daughter.
28 January 1993 — 1 February 1993
A series of events that took place over the four-day span of Thursday, 28 January 1993 to Monday, 1 February 1993 appeared to offer few clues to what happened to David Lewis.
Thursday (28 February 1993)
Lewis left work at his law firm around noon, complaining of feeling ill. After leaving the office, he stopped for gas, and later taught his junior college law class, finishing around 10 PM. No other details about how he may have passed the time after leaving work were offered in OSINT. He reportedly did not see his wife or daughter before the two, along with his in-laws, left for a planned shopping weekend in Dallas, Texas. (Analyst’s note: Mrs. Lewis stated just prior to his disappearance, her husband mentioned threats of “‘someone wanting to kill him,'”2 but she did not learn details.)
Friday (29 January 1993)
Lewis stayed home from work.
In the afternoon, a friend from church reported seeing him “hurrying through the Southwest Airlines terminal at Amarillo Airport”;3 he was not carrying luggage.
A red Ford Explorer, the type of vehicle Lewis owned, although not positively identified as his, was seen parked outside the Potter County Courts Building at 10:30 PM.4
Saturday (30 January 1993)
In the morning, Lewis’s red Ford Explorer was seen parked at the courthouse, apparently, this time a confirmed sighting; at noon, it was parked in his driveway.
That afternoon, Lewis made his last known contact when he reached out to the seller of a basketball goal and discussed its potential purchase for his daughter’s upcoming birthday (5 February 1993).
He made a house payment.
A $5,000 deposit was made into the couple’s joint bank account.
Sunday (31 January 1993)
A sheriff’s deputy reportedly saw a man who looked like Lewis standing across the street from the courts building photographing a red Ford Explorer that was again parked out front.5
An airline ticket from Dallas to Amarillo was purchased in Lewis’s name.
Lewis’s wife and daughter returned to Amarillo from their shopping weekend. Upon return, Mrs. Lewis found someone had taped the Super Bowl; the VCR recording had continued after the game ended. Lewis’s favorite pillow was in place where he watched TV. There was a message on the answering machine from a client who requested a Sunday meeting, so Mrs. Lewis assumed her husband was working late. His wedding ring and watch were on the kitchen counter. Laundry was in the dryer. Two freshly-made turkey sandwiches were in the refrigerator.6
Monday (1 February 1993) (Amarillo, TX)
An airline ticket from Los Angeles to Dallas was purchased in Lewis’s name.
An unidentified individual reached out to Mrs. Lewis to ask why her husband had missed two appointments (NFI).
Mrs. Lewis reported her husband missing.
A Dallas cab driver claimed to have driven a man matching Lewis’s description from a hotel in Dallas to the Dallas/Fort Worth Airport. He said the passenger seemed “nervous” and “fumbled” through a wad of $100 bills to pay the fare.7
Police found Lewis’s Ford Explorer parked at the courts building with the car and house keys under the floorboard, and his checkbook, cell phone, driver’s license, and two gas credit cards inside. The car was usually left unlocked, even with valuables present, but authorities found the car locked.8
Monday (1 February 1993) (Yakima County, WA)
At 10:24 PM, 1,600 miles away, a man dressed in second-hand military surplus fatigues and work boots was struck and killed in a hit-and-run incident near the intersection of Rivard Road and SR-24, a two-lane, undivided highway outside Moxee, Washington, east of Yakima.9 A Chevrolet Camaro was seen in area (NFI). Shortly before the hit-and-run, the man was observed by witnesses walking down the middle of eastbound lanes. In later testing, examiners found no evidence of drugs or intoxication. The man had no identification on him. He was a John Doe for the next 11 years.
2004 (Yakima, Washington)
In 2004, a Washington State patrol officer conducting a Google search matched a missing persons report on David Glenn Lewis that was issued by Amarillo authorities to the Moxee John Doe. The identification was later confirmed through a fingerprint match, familial DNA, and a pair of distinctive eyeglasses Lewis was known to wear that were found in evidence.10
Analysis of Competing Hypotheses
Five hypotheses were proposed for input into an Analysis of Competing Hypotheses (ACH) matrix:
- H1: Voluntary exit
- H2: Suicide
- H3: Foul play/abduction
- H4: Fugue state/dissociative episode
- H5: Undisclosed personal activity
A five-item, highly condensed set of evidence was compiled:
- Stable baseline, no clear precipitating crisis (high-functioning, future-oriented, described as upbeat)
- Abrupt, time-bound behavioral shift (skips work, airport sighting without luggage, occurs while family is away)
- Evidence of organized, long-distance movement (multi-city airline activity, cash use, rapid transit from Amarillo to Yakima region)
- Intentional abandonment of identity markers (ID, money instruments, personal items left behind; car secured atypically)
- Final state: severe behavioral disorganization (no ID, second-hand clothing, walking in roadway at night, not intoxicated, fatal hit-and-run)
As is customary at The Intelligence Shop, the analyst ran the ACH matrix first, and then input the hypotheses and evidence into AI systems Claude, Grok, ChatGPT, and Gemini. Each of the entities ranked the five hypotheses from fewest to most inconsistencies — the measure of strength in ACH testing. Hypotheses with too many inconsistencies conflict with the evidence and are eliminated unless new evidence arises.
Findings
The analyst and four AI systems scored three of the hypotheses — voluntary exit, suicide, and foul play/abduction — differently, although when taking into consideration the aggregate scores, all three were eliminated.
The two hypotheses with the fewest inconsistencies were H5, undisclosed personal activity, in first place; and H4, fugue state/dissociative episode, in second. Some of the models proposed the two theories were complementary, which explained the closeness of the outcome. This cascade suggested Lewis likely initiated a deliberate, concealed trip for personal/unknown reasons, and subsequently experienced acute psychological disorganization, which led to his accidental death near Yakima, Washington.
Postscript
As of today the case is closed. In Amarillo, investigators stopped looking into the matter when they discovered airline tickets purchased in Lewis’s name. In Yakima, detectives uncovered nothing to suggest the death of David Lewis was anything other than a car-pedestrian collision. While investigators in both cities agreed there was no foul play, this analysis offers a theory on why Lewis left — an enduring mystery that provides vital context for understanding similar cases in the future.
Footnotes
- Jean Pagal, Fort Worth Star-Telegram, “Police stumped in search for missing lawyer — Family man described as the ultimate nice guy disappears, leaving behind a baffling trail of clues,” 27 June 1993. ↩︎
- Lee Hancock, Dallas Morning News, “Man’s disappearance baffles kin, officials — Some fear Amarillo lawyer was abducted,” 14 February 1993. ↩︎
- Jean Pagal, Fort Worth Star-Telegram, “Police stumped in search for missing lawyer — Family man described as the ultimate nice guy disappears, leaving behind a baffling trail of clues,” 27 June 1993. ↩︎
- Jean Pagal, Fort Worth Star-Telegram, “Police stumped in search for missing lawyer — Family man described as the ultimate nice guy disappears, leaving behind a baffling trail of clues,” 27 June 1993. ↩︎
- Jean Pagal, Fort Worth Star-Telegram, “Police stumped in search for missing lawyer — Family man described as the ultimate nice guy disappears, leaving behind a baffling trail of clues,” 27 June 1993. ↩︎
- Kris Abbey, Amarillo Globe-News, “Family still seeks answers,” 9 October 2004. ↩︎
- Jean Pagal, Fort Worth Star-Telegram, “Police stumped in search for missing lawyer — Family man described as the ultimate nice guy disappears, leaving behind a baffling trail of clues,” 27 June 1993. ↩︎
- Lee Hancock, Dallas Morning News, “Man’s disappearance baffles kin, officials — Some fear Amarillo lawyer was abducted,” 14 February 1993. ↩︎
- Kris Abbey, Amarillo Globe-News, “Family still seeks answers,” 9 October 2004. ↩︎
- Mike Barber, Seattle Post-Intelligencer, “1993 hit-run victim is finally identified,” 8 October 2004. ↩︎