Will Trent, a dedicated agent with the Georgia Bureau of Investigation for fifteen years, knows that there's definitely such a thing as a cop's intuition. Which is why he should have listened to his own. While in an airport restroom at Atlanta's Hartsfield-Jackson International, Will overhears a girl's pleading, plaintive voice: "Please, I wanna go home." Something isn't right here, thinks Will. He feels it in his gut. But he waits too long to act, and now the girl and the anxious, angry man she's with have disappeared into the crowds at the busiest passenger airport in the world.