Mike Sisco and his girlfriend Karen Harkness were gunned down in her Topeka, Kansas, home in 2002. Authorities believed it was a crime of passion. Sisco's daughter set out to help prove it was her mother, Dana Chandler, who was responsible.

Original source: https://www.cbsnews.com/news/dana-chandler-mike-sisco-karen-harkness-topeka-kansas-double-murder-trials/