Hardie was last seen in Foresthill, California on March 27, 1992. He got into an argument with his wife and left the house angry. He left behind his keys and wallet but took his Bultaco dirt bike and helmet. Hardie has never been heard from again. He is described as a survivalist and may have taken his dirt bike out into the woods.

There has been no activity on Hardie's Social Security Number (SSN) since his disappearance, indicating he did not leave home voluntarily. A search of a nearby canyon where Hardie often camped, fished and hiked yielded no evidence pointing to his whereabouts. He and his wife, to whom he had been married for 28 years prior to his disappearance, reportedly argued often. Hardie's case is unsolved.