A son is behind bars, after he allegedly bludgeoned his mom over bills, then tried to burn her body in a fire pit; that's where cops found her charred spinal cord. A dad drives into a flood zone, despite warning, killing his toddler. Now, he's facing felony charges. Plus, a cheerleader fatally shot at a bonfire - will live on...in others, thanks to her monumental gifts. Jennifer Gould reports.