On July 5, 2005, George Smith disappeared from his honeymoon cruise. His family has been on a mission to find those responsible, but their long quest for justice is now in jeopardy. In the beginning, suspicion surrounded George's new widow. But the FBI soon turned its focus to a group of young men — the last to see George alive. A "48 Hours" investigation has uncovered failed polygraphs, questionable alibis and a provocative video made by some of the men just hours after George Smith disappeared. "You know, sometimes you still think, 'Ah, he might still be out there,' cuz...