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Detectives retraced the paper trail of the property itself, pulling county permits, inspection records, and old blueprints. What they found deepened the mystery. The section of lot where the Pontiac was found had been poured in June 1993—13 months after the teens vanished. At that time, the land was owned by local contractor Paul Henders. His company, Henders and Sons Contracting, had been a small but busy outfit known for quick industrial jobs across southern Ohio.
On paper, the job seemed routine—a foundation pour for an expansion to a storage warehouse. But the timing, location, and rushed work logs raised every red flag possible. The sheriff’s office began looking into Henders’ history. It didn’t take long to learn he’d fled the state in 1994 after being investigated for fraud and embezzlement, leaving a trail of lawsuits and unpaid employees.
One former employee, foreman Richard Tully, now retired in Florida, remembered the job well. He said a section of concrete had been poured overnight, unplanned and against schedule, because Henders insisted on finishing before an upcoming inspection. Tully described site lights on past midnight, Henders showing up with another man not on the crew list, mixing additional concrete on-site with rented equipment and refusing to let anyone near that portion of the lot until the next morning. When the crew returned, the ground was already sealed. “I didn’t ask questions,” Tully admitted. “We were paid cash for that weekend.” That single statement changed everything.
Investigators now believe the car hadn’t accidentally fallen into a pit. It had been lowered, deliberately, methodically, covered, and sealed. The question was why.
The FBI confirmed it would have taken heavy machinery to accomplish such a burial, the kind available to construction crews. A crane or backhoe could easily lower a vehicle into an open foundation before a pour, and if done at night without permits, it could vanish in less than a day. Henders became the prime suspect instantly. Detectives tracked him down to a modest home in rural Arkansas, where he’d lived quietly since leaving Ohio. He was 68, retired, remarried, and reportedly in poor health.
When two investigators arrived at his door, he seemed calm but visibly shaken when they mentioned Lincoln County. He admitted he’d worked the Dry Creek site, but denied ever seeing a vehicle there. He claimed the overnight pour had been ordered by the client, not him. Still, inconsistencies mounted quickly. Records showed he had signed off on the concrete order that weekend. No client approval existed. Forensic accountants found no trace of payment for the extra load of material.
When asked to take a polygraph, he agreed and failed on the very first question related to the burial. The report noted physiological responses consistent with deception. Investigators prepared to build a case for obstruction and possible homicide accessory charges. But before they could move forward, Henders’ health declined rapidly. He suffered a cardiac event less than four months after the interview and died at home before any formal indictment could be filed.
With his death, the investigation hit another wall. Some believed he had acted alone, perhaps covering up an accident that happened near the site. Others thought he was protecting someone—a worker, a local official. But without direct testimony, the motive dissolved into speculation.
Still, the forensic team remained convinced this was no random tragedy. The clean placement of the vehicle, the perfectly aligned slab, the absence of panic or damage inside the car—all of it suggested calculated intent. Someone had gone to great lengths to erase three young lives, and they had almost succeeded.
For the families, it was another cruel turn. The answers they’d begged for now pointed toward a man who could no longer face justice. Joseph’s brother called it a confession buried under concrete. Nikki’s mother, Elaine, said she believed more people knew—that someone in town helped cover it up, whether out of loyalty or fear.
Investigators boxed up the final evidence and logged the case back into the cold file archive, unable to shake one haunting realization. The section of concrete that hid the car had been inspected and approved in 1993 by a county building supervisor—a man who lived less than a mile from the Mulaney home. Whether he missed what was beneath him or simply looked away, no one ever found out.
In spring 2017, the official conclusion finally arrived. After months of forensic testing, reconstruction, and public speculation, investigators ruled the deaths of Joseph Mulaney, William Hamilton, and Nikki Beles as accidental but suspicious. The report read like a compromise between evidence and unease—a narrative that made sense on paper, but not in the hearts of those who had waited 25 years for an explanation.
According to the official theory, after leaving prom that night in 1992, the three friends had somehow taken a wrong turn down an unfinished service road near the edge of the Dry Creek development zone. The road, still under construction, ended abruptly at a drainage pit where concrete work was set to begin. Investigators believed the car may have slipped down the incline, landing nose-first into the pit and becoming trapped. Days later, unaware anything was there, workers poured the concrete foundation, entombing the vehicle and its passengers forever.