Gavin Smith

Smith has a successful career as a movie executive for 20th Century Fox -- he distributed Avatar and the Star Wars trilogy -- and is a married man and a father of three. But the 57-year-old has been missing since May 1, 2012. Even after America's Most Wanted aired an episode on Smith, no trace of the exec has surfaced. While police searched in vain at the residence of a couple who knew Smith, they are not even sure foul play is involved. Smith has vanished without a trace.