A family business in Tucson turned deadly on the morning of August 7, 1989. Gene Dietz, 55, was at the automotive paint and body shop he owned with his family when his daughter’s estranged boyfriend, Joseph Rudolph Wood III, entered. Wood waited while Gene finished a telephone call, then drew a revolver and shot Gene once in the chest; the shot was fatal.

Wood then located Gene’s daughter, Debra, inside the shop, grabbed her by the neck and shot her twice, killing her. Police who had been alerted to a suspicious person arrived as the violence unfolded. Officers confronted Wood as he exited the shop; he initially complied with commands to drop his weapon but then raised it toward officers and was shot and taken into custody.

Wood was charged with two counts of first-degree murder and aggravated assault, convicted at trial and sentenced to death. Did anyone who knew the Dietz family or worked at the shop see anything unusual in the days leading up to August 7, 1989?