Early on in the investigation, police claimed Diane was responsible for the shootings of her children, but she publicly voiced her innocence, claiming that a shaggy-haired stranger shot them.
At the trial, Diane's surviving daughter, 9-year-old Christie, took the witness stand and testified that her mother was the shooter. Diane was nine months pregnant when she was convicted on one count of aggravated murder and two counts of attempted murder.
While in prison, Diane scaled an 18-foot razor wire fence and escaped from her Oregon cell in July 1988. There was a 14-state manhunt for her, which she eluded for 10 days. She was recaptured and sent to a New Jersey prison to serve the remainder of her life sentence.