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

Case Description

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Summary based on the NamUs case record (MP19943) and 8 other sources
Mark Steven Scott, a 17-year-old from Houston, Texas, went missing on April 20, 1972. He left his home that day to spend time with friends but never returned. Shortly after his disappearance, Mark’s family received a postcard, supposedly from him, stating that he had found a job in Austin and would return home after saving enough money. This was later revealed to be part of a cruel deception.

Mark tragically became one of the known victims of serial killer Dean Corll, also infamously known as "The Candy Man." Corll, aided by accomplices Elmer Wayne Henley Jr. and David Owen Brooks, lured teenage boys to Corll's home under false pretenses, where they were subsequently tortured and murdered. Mark was killed on April 21, 1972, at Corll's residence after being lured there by Henley. Henley later admitted to his involvement and described the horrific details of Mark's death.

Although authorities initially believed they had found Mark's remains in a mass grave where many of Corll’s victims were buried, DNA testing in 2011 revealed that the remains belonged to another victim, Steven Kent Sickman. Despite extensive searches, Mark's body has never been recovered, and he is presumed dead. His remains are believed to be buried at High Island Beach, a location that has since been submerged due to environmental changes.

Last Seen: Apr 20, 1972

Possible Unidentified Matches (10)

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.

85%Strong
John Doe — Texas
UP4558 • Found Oct 24, 1975
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Sex ✓Male
Age 100%Est. 20–30 vs 17 when missing
Race 100%White
Location 100%7 mi away, same county
TimingFound 4 years after last seen
Height 100%5'11" vs 5'11"–6'0"
Weight 100%145 lb vs 160–175 lb
Hair 100%Brown vs Brown
83%Moderate
John Doe — Houston, Texas
UP4555 • Found Nov 24, 1974
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Sex ✓Male
Age 85%Est. 18–40 vs 17 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 3 years after last seen
Height 100%5'11" vs 5'11"–6'0"
Weight 100%145 lb vs 160–175 lb
Hair 100%Brown vs Brown
82%Moderate
John Doe — Houston, Texas
UP12728 • Found Jul 18, 1991
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Sex ✓Male
Age 100%Est. 35–50 vs 17 when missing
Race 100%White
Location 100%9 mi away, same county
TimingFound 19 years after last seen
Height 100%6'0" vs 5'11"–6'0"
Weight 100%172 lb vs 160–175 lb
Hair 100%Brown vs Brown
81%Moderate
John Doe — Houston, Texas
UP4638 • Found Apr 19, 1980
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Sex ✓Male
Age 100%Est. 20–30 vs 17 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 8 years after last seen
Height 84%5'9" vs 5'11"–6'0"
Weight 78%210 lb vs 160–175 lb
Hair 100%Brown vs Brown
81%Moderate
John Doe — Houston, Texas
UP4648 • Found Nov 16, 1979
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Sex ✓Male
Age 100%Est. 20–30 vs 17 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 8 years after last seen
Height 84%6'2" vs 5'11"–6'0"
Weight 100%175 lb vs 160–175 lb
Hair 60%Black vs Brown
81%Moderate
John Doe — Montgomery, Texas
UP4572 • Found Aug 22, 1977
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Sex ✓Male
Age 100%Est. 15–25 vs 17 when missing
Race 100%White
Location 91%44 mi away, same state
TimingFound 5 years after last seen
Height 84%5'9" vs 5'11"–6'0"
Weight 96%140 lb vs 160–175 lb
Hair 100%Brown vs Brown
80%Moderate
John Doe — Houston, Texas
UP1411 • Found Nov 14, 1982
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Sex ✓Male
Age 100%Est. 20–35 vs 17 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 11 years after last seen
Height 100%5'10" vs 5'11"–6'0"
80%Moderate
John Doe — Houston, Texas
UP4616 • Found Sep 3, 1981
View case
Sex ✓Male
Age 100%Est. 18–25 vs 17 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 9 years after last seen
Height 100%5'11" vs 5'11"–6'0"
Weight 100%168 lb vs 160–175 lb
Hair 60%Black vs Brown
Eyes 0%Brown vs Blue
80%Moderate
John Doe — Texas
UP4617 • Found Aug 28, 1981
View case
Sex ✓Male
Age 100%Est. 20–30 vs 17 when missing
Race 100%White
Location 78%89 mi away, same state
TimingFound 9 years after last seen
Height 100%6'1" vs 5'11"–6'0"
Weight 100%160 lb vs 160–175 lb
Hair 100%Brown vs Brown
Eyes 100%Blue vs Blue
80%Moderate
John Doe — Houston, Texas - unidentified case UP4621
John Doe — Houston, Texas
UP4621 • Found Jul 16, 1981
View case
Sex ✓Male
Age 100%Est. 20–30 vs 17 when missing
Race 100%White
Location 100%4 mi away, same county
TimingFound 9 years after last seen
Height 100%6'0" vs 5'11"–6'0"
Weight 100%170 lb vs 160–175 lb
Hair 60%Black vs Brown
Eyes 0%Brown vs Blue

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.