The train's rhythm lulls the young schoolgirl into a sense of safety, her book open on her lap, her mind elsewhere. But she's not alone. A man, older, hungry, watches her from across the aisle. As the train picks up speed, so does his courage. He leans in, his voice a low rumble, "You're new here, aren't you?" His eyes flick down to her uniform, then back up to her face, a smirk playing at the corners of his mouth. The girl swallows hard, her heart beginning to race. The chase is on.