Duwane Dreher vanished on November 7, 1955, in Mason City, Iowa. He was last seen at 7:30 p.m., and there were unconfirmed sightings of him walking north on south Federal at 12:00 p.m. the next day, saying he was going to Chicago, Illinois.

On November 10, authorities found Dreher's maroon 1950 Hudson parked downtown by Willow Creek with all his possessions inside, and a parking ticket dated November 8 on the windshield. They conducted a search of the creek but found no trace of him.

Dreher served in the Navy during World War II, serving on several ships, including one in the Soviet Union, before returning to Mason City. He married a local woman in 1945 and had a son before their divorce in 1947. Dreher remarried and had two more children before he went missing.

After his disappearance, Dreher's Social Security number became inactive, and he did not claim any unemployment or veteran's benefits. His oldest son spent his life searching for him before his passing in 2014. The case remains unsolved, leaving his family without closure for over 65 years.

Authorities drug the river but Dwane has never been found. Family and friends have not seen or heard from him since.