This week on Headline Highlights: D4vd's preliminary hearing is underway, with prosecutors presenting evidence they say supports that he groomed and murdered 14-year-old Celeste Rivas Hernandez. The murder of New Jersey psychotherapist Brooke Hanlon remains unsolved nearly two months later, with no arrests or named suspects. New developments in the Ohio "House of Horrors" case reveal additional child marriages within the Siders family. And an Alabama teenager is accused of fatally stabbing his mother and critically injuring his father during an argument over discipline...