 This case. It's like a screenplay, something straight out of Hollywood. But it's not fiction. It's 48 Hours. Human remains found this week. Four families shattered. There's no physical evidence. The mystery would haunt investigators for years. There's some questions that have to be asked and need to be answered. Like a John Grisham novel. A gripping true crime original. 48 Hours. Now streaming on the free CBS News app.