David Horn Jr. was last seen at Connolly’s Pub, located in the 900 block of Market Street in Marcus Hook, Pennsylvania, between 7:00 and 7:30 p.m. on December 25, 2017. He had called for an Uber, but the ride was later canceled for unknown reasons. He has not been heard from since. At the time of his disappearance, Horn was living alone in his late grandmother’s home on Price Street. He had told his family he wouldn’t be spending Christmas with them and planned to travel to Las Vegas after the holiday, so they were not initially concerned. On January 5, 2018, Horn’s father visited the home. He found Horn’s truck in the driveway and the house empty. Inside, the lights, fan, and television were on, and Horn’s unused plane ticket to Las Vegas was found along with several empty vodka bottles. There was no sign of Horn. There has been no activity on his bank accounts or phone since Christmas 2017. His case remains unsolved.