Mark John Refsell, 29, was reported missing after he failed to arrive in Montana as expected on March 29, 1986. He was last known to be in Newport, Oregon, where his vehicle was found abandoned off Highway 101 just north of the town. Refsell is described as a white male with blond or strawberry-colored hair and blue eyes, 6 feet 2 inches tall and about 170 pounds.

The Oregon State Police, Newport Area Command, opened an investigation after the unoccupied car was discovered, but there were no immediate signs of foul play at the scene and no clear explanation for why he vanished. Details about why Refsell was in Newport, his plans, or any personal struggles have not been provided publicly, and the case eventually went cold.

Anyone who knew Mark, saw his car along Highway 101 in late March 1986, or has information about his movements around that time is asked to come forward.