Crime Solvers Central
Crime Solvers Central
298 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 (MP42402) and 4 other sources
In the spring of 1987, the life of William F. Muller, a 45-year-old man from the Doylestown, Pennsylvania area, took a turn that would leave his family with unanswered questions for decades. On March 24, 1987, William, a plumber by trade, completed his workday in Philadelphia and began his usual commute home. He was last seen getting into his black 1983 Plymouth Turismo, a vehicle that would seemingly vanish along with him. His journey was supposed to end at his residence in Nockamixon Township, a part of the greater Doylestown area, but he never arrived. Concern grew among his friends and family when he couldn't be reached. Upon checking his home, they found a scene that suggested an abrupt departure. A pot of spaghetti was left on the stove, and his guns were undisturbed in their cabinet, yet William and his car were gone.

The circumstances surrounding William's disappearance were complicated and troubling. Just two weeks prior to vanishing, he had initiated a lawsuit against his younger brother, Frederick William Muller. The legal dispute was over their deceased mother's estate, which included a farmhouse on a seventeen-acre property. William reportedly believed his brother was using the family property for illicit activities, specifically a narcotics operation, and he was determined to stop it. Following William's disappearance, the lawsuit was dropped, leaving the control of the estate unresolved in his absence. This familial conflict added a layer of suspicion and concern for those investigating his case. He was a father to three daughters and, though recently divorced, had a network of relatives in the area who were left to grapple with his sudden absence.

Years passed without any sign of William or his vehicle. The investigation into his disappearance continued, and in a significant development years later, his brother Frederick was arrested on drug charges in 2000. It was discovered he had been manufacturing methamphetamine at the farmhouse, seemingly confirming William's earlier suspicions. Authorities at the time stated that Frederick was a suspect in the 'probable murder' of his brother, William. Despite the strong suspicions and the context of the family dispute, no charges have ever been filed in connection with William's disappearance. Seven years after he was last seen, William F. Muller was declared legally dead, and his estate was distributed among his relatives. His case remains a poignant mystery, an unresolved story of a man who vanished after taking a stand, leaving behind a family to wonder what happened on that March day in 1987.

Last Seen: Mar 24, 1987

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.

84%Moderate
John Doe — Grenloch, New Jersey
UP1628 • Found Sep 24, 1989
View case
Sex ✓Male
Age 100%Est. 40–50 vs 45 when missing
Race 100%White
Location 93%37 mi away
TimingFound 3 years after last seen
Height 100%5'10" vs 5'10"–6'2"
Weight 96%224 lb vs 195–200 lb
Hair 100%Brown vs Brown
84%Moderate
John Doe — Brooklyn, New York - unidentified case UP9121
John Doe — Brooklyn, New York
UP9121 • Found Dec 26, 1988
View case
Sex ✓Male
Age 100%Est. 35–50 vs 45 when missing
Race 100%White
Location 85%66 mi away
TimingFound 21 months after last seen
Height 100%6'0" vs 5'10"–6'2"
Weight 95%170 lb vs 195–200 lb
Hair 100%Brown vs Brown
Eyes 100%Blue vs Blue
83%Moderate
John Doe — New York, New York - unidentified case UP7756
John Doe — New York, New York
UP7756 • Found Jan 17, 1994
View case
Sex ✓Male
Age 100%Est. 40–55 vs 45 when missing
Race 100%White
Location 85%65 mi away
TimingFound 7 years after last seen
Height 100%5'11" vs 5'10"–6'2"
Weight 100%197 lb vs 195–200 lb
Hair 100%Brown vs Brown
Eyes 100%Blue vs Blue
82%Moderate
John Doe — Philadephia, Pennsylvania
UP7463 • Found Oct 14, 1994
View case
Sex ✓Male
Age 100%Est. 35–45 vs 45 when missing
Race 100%White
Location 97%22 mi away, same state
TimingFound 8 years after last seen
Height 100%5'9" vs 5'10"–6'2"
Weight 100%181 lb vs 195–200 lb
Hair 100%Brown vs Brown
Eyes 30%Hazel vs Blue
82%Moderate
John Doe — Brooklyn, New York - unidentified case UP7817
John Doe — Brooklyn, New York
UP7817 • Found Jul 28, 1994
View case
Sex ✓Male
Age 100%Est. 35–50 vs 45 when missing
Race 100%White
Location 84%67 mi away
TimingFound 7 years after last seen
Height 100%5'10" vs 5'10"–6'2"
Weight 90%165 lb vs 195–200 lb
Hair 100%Brown vs Brown
Eyes 100%Blue vs Blue
82%Moderate
John Doe — West Milford, New Jersey
UP1718 • Found Jun 10, 1989
View case
Sex ✓Male
Age 100%Est. 33–45 vs 45 when missing
Race 100%White
Location 84%69 mi away
TimingFound 2 years after last seen
Height 100%6'0" vs 5'10"–6'2"
Weight 100%182 lb vs 195–200 lb
Hair 100%Brown vs Brown
81%Moderate
John Doe — Philadelphia, Pennsylvania
UP16610 • Found Oct 25, 1996
View case
Sex ✓Male
Age 100%Est. 40–50 vs 45 when missing
Race 100%White
Location 97%20 mi away, same state
TimingFound 10 years after last seen
Height 100%5'10" vs 5'10"–6'2"
Weight 100%190 lb vs 195–200 lb
81%Moderate
John Doe — Philadelphia, Pennsylvania
UP55291 • Found Nov 11, 1991
View case
Sex ✓Male
Age 85%Est. 50–70 vs 45 when missing
Race 100%White
Location 95%28 mi away, same state
TimingFound 5 years after last seen
Height 100%5'7"–5'9" vs 5'10"–6'2"
Weight 95%155–170 lb vs 195–200 lb
Hair 40%Gray vs Brown
Eyes 100%Blue vs Blue
81%Moderate
John Doe — Brooklyn, New York - unidentified case UP5761
John Doe — Brooklyn, New York
UP5761 • Found Jan 30, 2002
View case
Sex ✓Male
Age 100%Est. 55–60 vs 45 when missing
Race 100%White
Location 84%67 mi away
TimingFound 15 years after last seen
Height 100%5'10" vs 5'10"–6'2"
Weight 100%180 lb vs 195–200 lb
Hair 100%Brown vs Brown
Eyes 100%Blue vs Blue
81%Moderate
John Doe — Mullica Township, New Jersey - unidentified case UP1484
John Doe — Mullica Township, New Jersey
UP1484 • Found Oct 11, 1994
View case
Sex ✓Male
Age 100%Est. 45–55 vs 45 when missing
Race 100%White
Location 88%55 mi away
TimingFound 8 years after last seen
Height 100%5'9" vs 5'10"–6'2"
Weight 100%187 lb vs 195–200 lb
Hair 100%Brown vs Brown

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.