Records: Before he killed, John Keith Miller showed violent streak
- At the age of 84, Jon Keith Miller received a life sentence for the deadly stabbing of Mary Schlais in Wisconsin, a crime committed in 1974 that was officially resolved after five decades with his conviction in late March 2024.
- The conviction followed a 50-year search after forensic genealogy linked evidence to Miller, who confessed after arrest at an assisted living facility.
- Miller had a history of violence and criminal activity, including a 1965 Arizona robbery, armed robbery in California, and threats with a loaded gun before the murder.
- Mary Schlais, 25, was fatally injured with multiple stab wounds after rejecting Miller's sexual advances, and her body was left in a snowbank in rural Wisconsin.
- Miller is now serving life at Wisconsin's Dodge Correctional Facility, and his violent history is documented in the five-part podcast series 'Joli Truelson: Connecting the Dots.
16 Articles
16 Articles

Records: Before he killed, John Keith Miller showed violent streak
Jon Keith Miller, 84, was sentenced to life in prison March 27, 2024 for the 1974 murder of Mary Schlais, who he stabbed more than a dozen times and dumped in a Wisconsin snowbank. The sentencing culminated the 50-year search for her killer — and led investigators to Miller's Owatonna assisted living facility apartment, where he confessed to the murder. A Forum News Service investigation traced Miller's known history — from his high school gradu…
Records: Before he killed, Jon Keith Miller showed violent streak
Jon Keith Miller, 84, was sentenced to life in prison March 27, 2024 for the 1974 murder of Mary Schlais, who he stabbed more than a dozen times and dumped in a Wisconsin snowbank. The sentencing culminated the 50-year search for her killer — and led investigators to Miller's Owatonna assisted living facility apartment, where he confessed to the murder. A Forum News Service investigation traced Miller's known history — from his high school gradu…
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