<p>"I need you to be strong." Caleb O'Toole could hear his mother's last words as clear as if she was sitting right next to him. He'd promised to keep his sisters safe. But safety is over a thousand miles away in the rugged Bitterroot Mountains, past dust-choked deserts and thorny tumbleweeds. Monstrous tornadoes and hungry wolves wait for them on the path ahead. But with the infamous Blackstone Gang hot on their trail, Caleb has no choice. There's no telling how far the gang will go to keep their latest murder a secret. But Caleb O'Toole can hear his mother's last words and he refuses to let her down. </p>