Her Dying Message

Sheriff Lexie's tears blur the body that lies face down on the rocks. Her scream catches in the wind and carries to the treetops. A family member was shot at close range--murdered.
The clues lead to an accused rapist. There's no proof he's a killer, but Lexie suspects she's missing something. Her pursuit of evidence is hampered by a puzzling question. Why kill a good person for someone else's sins?