Dona Mae Bayerl was last seen at her home in Muskego, Wisconsin on May 6, 1979. According to her husband she left the home after a quarrel, and drove off in the family car. The car was returned that night. When the children woke up the next morning, Dona Mae was gone. She was reported as missing by her husband on May 9, 1979. The first image is an age progression of what Dona Mae may look like in 2018.
On June 26, 2019, Dona Mae's former husband, John Bayerl, was tried and found guilty of the murder of Dona Mae Bayerl. The whereabouts of her remains are still unknown.