A Youngstown, Ohio, woman who was reported missing in 2017 was discovered dismembered and stored in a freezer six months later. Now, three people are awaiting trial for the murder of Shannan Graves. Nancy Grace explores this disturbing case with experts including South Carolina medical examiner Dr. Michelle Dupre -- author of "Homicide Investigation Field Guide," Atlanta psychologist Dr. Wendy Dickinson -- founder of Grow Counseling, North Carolina family and divorce lawyer John Lemley.