In 2001, Oakley Engesser was convicted of vehicular homicide and two counts of vehicular battery resulting from a car crash near Sturgis.
Engesser spent 12 years in prison, all the while maintaining he had not been driving.
After his conviction was overturned, Engesser sued investigators and prosecutors for ignoring witnesses and mishandling physical evidence, but those efforts failed.
Now he has turned to the Eighth Circuit Court of Appeals, which heard arguments on Thursday, Oct. 22.
Victoria Wicks has more of this report for South Dakota Public Broadcasting.