Reading just the excerpt, it sounds just like the Steven Seagal movie Under Siege 2: Dark Territory, where terrorists take over a train that Seagsal's character is on, but no one knows who he is and how dangerous he is to their plan. And of course, he wants to save his niece at all costs. I honestly think because it sounds WAY too similar, all I'll do is compare this book to that movie, so I'll pass