Marie stole barium acetate from her high school chemistry class and laced her father's tacos with a lethal dose.
The trial received media attention since she was a promising student, and patricide is a rare crime more commonly committed by men.
[2][3] Steven Robards's death was ruled a heart attack initially.
Over a year after his death, Marie confessed to a close friend, Stacey High.
She pled not guilty, explaining her intent was to make her father ill. Marie Robards was convicted of murder in a 1995 trial and sentenced to 27 years in prison.