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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 (MP54141) and 7 other sources
On a Christmas Day that should have been filled with quiet celebration, 35-year-old David L. Horn, Jr. vanished from Marcus Hook, Pennsylvania. He was last seen on December 25, 2017, between 7:00 and 7:30 p.m. at Connolly's Pub on Market Street. That evening, the devoted Philadelphia Eagles fan had been at the neighborhood pub, a typical activity for him, especially with a game scheduled against the Raiders. What was uncharacteristic, however, was that he left the bar just as other fans were arriving to watch the game. He reportedly called for an Uber, but the ride was cancelled for reasons that remain unknown. He was never seen or heard from again. At the time of his disappearance, David was living by himself in his late grandmother's home on Price Street in the nearby borough of Trainer.

Initially, David's family was not alarmed by his silence. He had informed them that he would not be spending Christmas with them and had plans to travel to Las Vegas shortly after the holiday. This explanation provided a plausible reason for his lack of contact. However, concern began to mount, and on January 5, 2018, his father went to his home to check on him. The scene he discovered was unsettling. David's truck was parked in the driveway, and inside the deserted house, the lights, a fan, and the television were all on. His plane ticket to Las Vegas was found, unused. Adding to the ominous atmosphere, his father noticed a broken window on the basement door with what appeared to be blood on it. David was nowhere to be found. His mother officially reported him missing on January 9. Tragically, his mother, who was deeply involved in the search for him, passed away unexpectedly in January 2018, a fact David may never have learned.

The investigation into David's disappearance has left his loved ones with more questions than answers. Since the day he went missing, there has been no activity on his cell phone or his bank accounts. His family finds it hard to believe he would have missed the Eagles' game that night, let alone their subsequent Super Bowl championship. They also insist he would not have walked home from the bar in the cold. His family has expressed concerns that potential foul play was not thoroughly investigated initially, and they have heard rumors about the possible involvement of a biker gang. Despite the passage of time, the circumstances surrounding David Horn, Jr.'s disappearance on that Christmas evening remain a painful mystery. The case is a collection of puzzling details: a cancelled Uber, a house left in a state of normalcy, and a planned trip that never happened. For his family, the lack of resolution is a continuous source of grief as they continue to hope for answers.

Last Seen: Dec 25, 2017

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.

79%Possible
John Doe — Atlantic City, New Jersey - unidentified case UP102185
John Doe — Atlantic City, New Jersey
UP102185 • Found Jan 7, 2023
View case
Sex ✓Male
Age 85%Est. 19–39 vs 35 when missing
Race 100%White
Location 86%62 mi away
TimingFound 5 years after last seen
Height 100%5'9" vs 5'10"
Weight 100%150–180 lb vs 200 lb
Hair 50%Brown vs Blond
Eyes 100%Blue vs Blue
79%Possible
John Doe — Philadelphia, Pennsylvania
UP70353 • Found May 7, 2020
View case
Sex ✓Male
Age 100%Est. 35–50 vs 35 when missing
Race 100%White
Location 99%15 mi away, same state
TimingFound 2 years after last seen
Height 84%5'8" vs 5'10"
Weight 86%166 lb vs 200 lb
Hair 10%Black vs Blond
Eyes 0%Brown vs Blue
78%Possible
John Doe — Philadelphia, Pennsylvania
UP95925 • Found Sep 16, 2022
View case
Sex ✓Male
Age 85%Est. 21–40 vs 35 when missing
Race 100%White
Location 98%16 mi away, same state
TimingFound 5 years after last seen
Height 84%5'6"–5'8" vs 5'10"
Hair 100%Blond vs Blond
78%Possible
John Doe — Fairmont Heights, Maryland
UP17706 • Found Dec 13, 2017
View case
Sex ✓Male
Age 100%Est. 30–40 vs 35
Race 100%White
Location 75%102 mi away
TimingFound same day as last seen
Height 100%5'9"–6'1" vs 5'10"
76%Possible
John Doe — Philadelphia, Pennsylvania - unidentified case UP151698
John Doe — Philadelphia, Pennsylvania
UP151698 • Found Oct 13, 2025
View case
Sex ✓Male
Age 85%Est. 45–60 vs 35 when missing
Race 100%White
Location 98%19 mi away, same state
TimingFound 8 years after last seen
Height 84%5'6"–5'8" vs 5'10"
Weight 75%150–155 lb vs 200 lb
Hair 50%Brown vs Blond
Eyes 30%Hazel vs Blue
75%Possible
John Doe — Philadelphia, Pennsylvania
UP101001 • Found Feb 28, 2023
View case
Sex ✓Male
Age 68%Est. 45–60 vs 35 when missing
Race 100%White
Location 98%18 mi away, same state
TimingFound 5 years after last seen
Height 100%5'5"–5'11" vs 5'10"
75%Possible
John Doe — Philadelphia, Pennsylvania
UP99882 • Found Jan 28, 2023
View case
Sex ✓Male
Age 100%Est. 25–40 vs 35 when missing
Race 100%White
Location 97%20 mi away, same state
TimingFound 5 years after last seen
Height 52%5'6" vs 5'10"
Weight 32%123 lb vs 200 lb
75%Possible
John Doe — Philadelphia, Pennsylvania
UP95928 • Found Sep 12, 2022
View case
Sex ✓Male
Age 100%Est. 20–35 vs 35 when missing
Location 97%23 mi away, same state
TimingFound 5 years after last seen
Height 100%5'8"–5'10" vs 5'10"
75%Possible
John Doe — Philadelphia, Pennsylvania
UP89757 • Found Jun 4, 2019
View case
Sex ✓Male
Age 60%Est. 19–49 vs 35 when missing
Race 100%White
Location 97%20 mi away, same state
TimingFound 17 months after last seen
Height 100%5'11"–6'1" vs 5'10"
Hair 50%Brown vs Blond
75%Possible
John Doe — Alexandria, Virginia - unidentified case UP53878
John Doe — Alexandria, Virginia
UP53878 • Found Oct 9, 2018
View case
Sex ✓Male
Age 85%Est. 35–55 vs 35
Race 100%White
Location 73%112 mi away
TimingFound 9 months after last seen
Height 100%5'9"–6'2" vs 5'10"

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.