Bart Ross

Age: 57

Summary: electrician and cancer survivor who had spent the final years of his life in an escalating spiral of anger in trying to blame doctors and lawyers for what he deemed to be ineffective care during his treatment for cancer, who is believed to have killed a federal judge's mother and husband (Michael Lefkow, 64, and Donna Humphrey, 89) in retribution for having his case thrown out of federal court, and who was linked to the killings by a DNA match to a cigarette butt found at the scene of the murders.

Cause of Death: Suicide by self-inflicted gunshot wound

Born: March 16, 1947

Died: March 9, 2005

Location: Allis, Wisconsin