Arthur Gusewelle, 61, was murdered on November 3, 1977, in Edwardsville, Illinois, along with his wife Vernita and their son Ronald. The killings were part of a plot that investigators later tied to Barbara Jean Boyle and Glennon Engleman. Boyle, who had married Ronald, was convicted of participating in the plot to kill Ronald and sentenced to 50 years; she was acquitted of Arthur’s and Vernita’s murders. Engleman pleaded guilty to the murders and was given multiple life sentences; he died in prison in 1999.

The case produced extensive and contentious legal proceedings, including appeals, and became one of Madison County’s most notorious murder cases. A key factual thread is that the murders were committed as part of a calculated scheme tied to insurance money. Does anyone have documents or local reporting that shed more light on the investigation or the appeals?