The missing footage became the investigation's greatest frustration.
Technical specialists determined that the tape had been edited years earlier, but they could not recover the original recording from the damaged copy.
Frank insisted that his father had possessed a complete version.
According to him, Richard transferred the original material to a private archive before his death.
The archive had since been emptied.
Emily felt hope rising and falling with every new development.
She wanted undeniable proof of what happened to her father.
But Jonathan warned her that even a complete recording might not answer every question.
"Your father's death involved several failures," he explained. "The missing safety gate, the altered report, the pressure placed on him, and the decisions afterward."
"Then what if we never prove someone pushed him?"
"We don't have to invent an answer. We have to establish what the evidence actually shows."
Emily understood.
Still, she struggled with the possibility that some questions would remain unanswered.
Thomas became increasingly determined to find the original recording.
He contacted retired company officers, former contractors, and people who had worked with Richard Mercer.
Most remembered little.
Some refused to speak.
Then Walter received a phone call from an elderly woman named Evelyn Shaw.
Her husband had once managed security equipment at Whitcomb Transport.
He died eight years earlier, leaving behind boxes of old technical manuals and videotapes.
Evelyn believed one of those boxes contained materials Richard had asked her husband to store.
Thomas, Walter, and Emily drove to her farmhouse the following afternoon.
Evelyn welcomed them into a warm kitchen smelling of cinnamon and coffee.
"I remember Daniel," she said. "He fixed our furnace once and refused to take money."
Emily smiled through tears.
"That sounds like him."
Evelyn led them into a storage room.
Cardboard boxes lined the shelves.
After nearly an hour, Walter found a container labeled Whitcomb Security Backup — 2007.
Inside were several tapes and a small handwritten inventory.
One entry listed the loading platform camera.
The date matched Daniel's death.
Emily stared at the cassette in Walter's hand.
For eighteen years, her father's final hours had existed only in contradictory reports and frightened memories.
Now the missing record might finally speak.