Twenty-one-year-old Hestina Harris from Frederick, Maryland, faces the possibility of life in prison for killing her 67-year-old grandmother. Harris’ sentencing Thursday concludes a case in which there was no clear motive. Harris was convicted of first-degree murder by a jury in March for fatally stabbing her grandmother, Lillie Morris, in December 2014 at their home near Burkittsville. Morris was stabbed 20 times and was found on the front lawn of her home. Harris told a defense psychologist that she had been visited by a demon-like figure and deceased family members. She denied stabbing Morris and told police she saw a masked man running from the residence.