On the other side of the bathroom door, she would find cars, lights, people, the highway - safety, if Alexandra Zapp could dodge the man blocking the way out with his body, and a knife.
If O'Reilly was driving a few miles an hour faster, Alexandra Zapp's life might have been saved. But if he arrived at that rest stop moments later, somewhere today, a killer would walk free. He is a hero, a savior to someone who will never know.