Barbara Mohler told the gunman, who was her brother-in-law Paul Gilkey, that she had proof he had killed wife Carolyn Gilkey in 1972, according to police records obtained by The Associated Press. Carolyn's death had been originally ruled a suicide.
A month after the murder-suicide, the coroner changed the cause of Carolyn Gilkey's 1972 death from a shotgun wound to undetermined, saying evidence now appears the shooting was staged. Coroner David Cummin said the shotgun wasn't in the right place for her to have been able to shoot herself.
