Lindall Ray Benedict, known to some as Butch and reportedly as Lyle Palmer, was 37 when he was last seen in Lansing, Michigan, on December 16, 1980. He was described as a white male, about 5 feet 10 inches and 180 pounds, with short brown hair, brown eyes, a scar on the top of his head and pockmarks and scars across his back. The only available photograph is from a high school yearbook circa 1960–1961.

Very little is publicly documented about his final day. Records do not specify where in Lansing he was seen, who observed him, what he was wearing, or whether he had a vehicle. Investigators received tips that he may have traveled to Detroit or Reno, but no confirmed sightings, financial transactions or later records have been publicly linked to him. No evidence publicly establishes an abduction, a crime scene, or an identified suspect.

If anyone knew Lindall, knew him under the name Lyle Palmer, or has information about his whereabouts after December 16, 1980, please share what is known.