48 HOURS gets underway Saturday, Sept. 29 at 10:00 PM, ET with "My Dad's Killer," which features Richard Schlesinger's report about a daughter who spent a decade certain she knew who killed her father and his fiancé, but couldn't prove it. After 48 HOURS began reporting the story, investigators pushed the case and the killer will now stand trial for murder. It is a story 48 HOURS has been reporting on for five years and the outcome has the potential to rip the family apart.