It is every person'sparticularly every parent'sworst nightmare. For a loved one to walk out through the front door and never to return is one of the most heartbreaking, terrifying, and harrowing experiences someone can go through. Not to know the fate of a person close to you is simply agonizingdid they choose to disappear, were they involved in an accident, or did something even worse befall them? Every day, staggering numbers of people go missing. Most return within 72 hours but theremany are never seen again. Some are students who take off to distant countries without telling their parents...