Authorities in Wyoming conducted several interviews with the man who had been renting the trailer in Casper, where officials believe the calls to Judy Aiello were made there (via Unsolved). “He told us on all occasions, in all interviews, that he had no knowledge of the phone calls and that he had not made the phone calls,” said Captain Mark Benton of the Natrona County Sheriff’s Department. “I had an occasion to show him a picture of Donald Kemp, and he said that he did not know Donald Kemp, had never seen Donald Kemp, and knew nothing of his whereabouts.”

However, not long after the interviews, the man — who the Observer-Reporter named as Mark Dennis — left Casper. Three years after he initially disappeared, a group of hunters discovered Kemp’s body just a few miles from where his SUV had been abandoned. Sheriff C.W. Ogburn offered his thoughts on what happened (per Unsolved): “We never did suspect foul play. He was out there, and was avoiding us, stayed away from us, and I believe on the second or third day, he was gonna try to get back to his vehicle, and he didn’t make it.”

Still, Mary Kemp believes there’s more to the story and that a major piece remains hidden in the phone calls received by Judy Aiello (via Unsolved). ​​”Who made the phone calls? That’s the big question, who it was. It had to have been my son,” Mary said.