On October 26, 1991, Susan Shea, a 19-year-old woman with autism, and her 48-year-old mother, Eileen Shea, were found fatally shot in their Lincoln Park, New Jersey home. Both deaths were the result of gunshot wounds, and the case was treated as a double homicide that rocked the suburban borough.

Investigators arrested Michael Edward Shea, the husband of Eileen and father of Susan, and charged him with two counts of first-degree murder in connection with the shootings. The case highlighted severe turmoil within the household and led to criminal proceedings against Michael Shea.