Dennis and his family were hiking in the Smokey Mountains back in 1969. He and his three brothers ran ahead and were going to hide along the path, and jump out to scare their parents. Three of the brothers went one way, while Dennis went another way because he was wearing a bright red shirt and would stick out.

When the time came, the 3 brothers jumped out and waited for 6-year-old Dennis to do the same, but he never did. He was never seen again.

Authorities searched for 3 months, and never found any trace of Dennis. Even more mysterious, was that armed Special Forces soldiers were tasked with the search and rescue operation, which is unheard of for a domestic disappearance. It sincerely begs the question: what was really going on with Dennis Martin?