The younger Hou believes his father has been kidnapped and is personally offering a reward of up to $250,000 for information that leads to his father's return or identifies those responsible for his disappearance.
"For over three decades, the disappearance of Annie McCarrick has generated countless theories, ranging from involvement of local criminals to speculation about foreign serial killers in her case."
Authorities are investigating the disappearance of Elizabeth Pollard, 64, who went searching for her cat and is feared to have fallen into a newly opened sinkhole. Despite efforts to find her, including using pole cameras, the search has yet to yield positive results.