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 (MP41340) and 3 other sources
Keith Lee Mastell, a 24-year-old man, was last seen on April 28, 2006, in Denton, Texas. On the day of his disappearance, Keith was facing several challenges, including the impoundment of his Jeep due to unpaid parking tickets. Despite his stepmother's offer to help, he told her that she had done enough and decided to leave, taking only a laundry basket. Keith was supposed to head to work at a factory where he was employed, but he never made it there. His final paycheck was never collected, and his backpack, which had been in his impounded Jeep, was reclaimed, but Keith himself vanished without a trace.

Described as a loner who enjoyed rock climbing and was not particularly interested in material things, Keith's disappearance has left both his family and investigators searching for answers. His case has been classified as endangered missing, and although DNA is available for identification purposes, no significant leads have surfaced in the years since he went missing.

Investigators continue to seek any information that might shed light on Keith's whereabouts, urging anyone who may have information to come forward. His case remains open and unsolved.

Last Seen: Apr 28, 2006

Possible Unidentified Matches (3)

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.

76%Possible
John Doe — Dallas, Texas
UP76467 • Found Aug 26, 2020
View case
Sex ✓Male
Age 100%Est. 36–48 vs 24 when missing
Race 100%White
Location 93%36 mi away, same state
TimingFound 14 years after last seen
Height 52%5'9" vs 6'1"
Weight 97%159 lb vs 180 lb
Hair 100%Brown vs Brown
Eyes 30%Hazel vs Blue
75%Possible
John Doe — Fort Worth, Texas
UP122859 • Found Oct 22, 2020
View case
Sex ✓Male
Age 60%Est. 18–100 vs 24 when missing
Race 100%White
Location 92%41 mi away, same state
TimingFound 14 years after last seen
Height 100%6'1" vs 6'1"
Weight 93%156 lb vs 180 lb
Hair 70%Gray vs Brown
Eyes 100%Blue vs Blue
75%Possible
John Doe — Fort Worth, Texas - unidentified case UP9745
John Doe — Fort Worth, Texas
UP9745 • Found Nov 14, 2011
View case
Sex ✓Male
Age 100%Est. 20–35 vs 24 when missing
Race 100%White
Location 94%33 mi away, same state
TimingFound 6 years after last seen

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.