Ben McDaniel vanished in 2010 while scuba diving in Florida's treacherous underwater caves, raising fears about his troubled past and possible foul play. Kenneth Plaisted's mysterious disappearance in 1971 outside his daughter's apartment complex adds another layer of intrigue, as deep financial issues surface in his case. Both families grapple with unanswered questions and emotional turmoil, leading to speculation about what really happened to these two men, decades apart but connected by their unsettling fates.