Crime Solvers Central
Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP19563) and 5 other sources
On December 30, 1988, John Warren Deetz, a 38-year-old truck driver from Fulton, Illinois, disappeared from Spokane Valley, Washington. Deetz, who worked for Westside Transport, had just completed a delivery to the West Coast Grocery Company. Following the delivery, he made two phone calls from the Broadway Truck Stop in Spokane. One call was to his employer, and the other was to his wife, whom he told he would be home soon. That was the last time anyone heard from John Deetz. He was described as a responsible man dedicated to his family and his job. He had three children and was not known to have any reason to voluntarily disappear.

The initial investigation discovered Deetz's empty trailer at the truck stop, but he and his brand-new tractor-trailer, valued at $100,000, were gone. His trucking supervisor reported him missing. For years, the case yielded few leads. However, a significant break came when, less than two years after his disappearance, a man named Ralph Howard Benson was seen driving Deetz's truck, which had been repainted. In early 1991, authorities found the stolen tractor on a property owned by Benson in the Los Angeles, California area. A search of Benson's home in Washington also uncovered the 1988 license plate from Deetz's rig, which appeared to be new and unweathered.

Investigators believe Benson, a self-employed long-haul trucker, operated a 'chop shop,' where he would dismantle stolen tractor-trailers and sell the parts. Despite the evidence connecting him to Deetz's truck, Benson was never charged in relation to his disappearance. Benson was considered a person of interest in Deetz's case and other unsolved crimes. In 2003, Benson was convicted for the murder of a Washington state fuel tax auditor, whom he had shot and dismembered. Ralph Howard Benson died in prison in September 2004, taking any potential knowledge of John Deetz's fate with him. John Deetz was legally declared dead, but his body has never been found, and his case remains an unsolved mystery with foul play strongly suspected. His family continues to hope for answers and closure in his disappearance.

Last Seen: Dec 30, 1988

Possible Unidentified Matches (2)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

82%Moderate
John Doe — Spokane, Washington - unidentified case UP492
John Doe — Spokane, Washington
UP492 • Found Oct 25, 1992
View case
Sex ✓Male
Age 85%Est. 40–60 vs 38 when missing
Race 100%White
Location 100%5 mi away, same county
TimingFound 4 years after last seen
Height 100%5'7" vs 5'8"
Weight 86%140 lb vs 170–180 lb
Hair 60%Black vs Brown
Eyes 100%Brown vs Brown
75%Possible
John Doe — Spokane County, Washington - unidentified case UP491
John Doe — Spokane County, Washington
UP491 • Found Jul 11, 1989
View case
Sex ✓Male
Age 60%Est. 30–60 vs 38
Race 100%White
Location 100%5 mi away, same county
TimingFound 6 months after last seen
Height 68%5'5" vs 5'8"
Weight 97%150 lb vs 170–180 lb

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.