The first time she spoke to him was at midnight. Seven-year-old Autumn Backman needed a hero. When she saw Special Agent Dillon Savich on TV after he’d brought down bank robbers in a Georgetown bank, she knew she’d found him. She called Savich, but she didn’t use the phone. They were burying dead people in my daddy’s grave . . . they’re coming after us. Please help me. Who’s they? Blessed, he’s coming. Ethan Merriweather, sheriff of...