" From inside his room Reacher heard the lawn chair scrape across the blacktop, but he paid no attention. Just a random nighttime sound, nothing dangerous, not a shotgun jacking a round, not the hiss of a blade on a sheath, nothing for his lizard brain to worry about. And the only non-lizard possibilities were a lace-up footstep on the sidewalk outside, and a knock on the door, because the woman from the railroad seemed like a person with a lot of questions, and also some kind of expectation they should be answered. Who are you and why have you come here? "

― Lee Child , Make Me (Jack Reacher, #20)