Laurie Gonyo seemed to vanish into thin air one day in November of 1976.  Eight months later, her body was found over 20 miles from her home. While the police originally suspected her husband, it turns out they may have been honing in on the wrong man. 

Sources:

https://www.newspapers.com/clip/3285458/bennington-banner/

https://www.tampabay.com/archive/1990/03/26/this-time-charge-is-murder-man-freed-in-attacks-accused-of-prior-killing/

https://www.orlandosentinel.com/news/os-xpm-1990-03-09-9003093519-story.html

https://law.justia.com/cases/vermont/supreme-court/1994/op92-039.html