Seven family members annihilated in a small town with a population of 200 people. He almost got away with it leaving one family member framed for the case.

Sources:

https://law.justia.com/cases/missouri/supreme-court/1991/70584-0.html

https://apnews.com/article/61ca46fd614f5f003f50b559bb97178b

https://www.newspapers.com/clip/14205286/james-eugene-schnick-charged-with-7/

https://thecinemaholic.com/who-were-james-schnicks-victims-where-is-he-now/