Some of the mysteries have been solved – some with good ends and some with not – but many more remain unsolved.
“David Paulides is a former police detective who is now an investigator and writer known primarily for his self-published books, one dedicated to proving the reality of Bigfoot, and his Missing 411 series of books, in which he documents the disappearance of people in national parks and elsewhere.
“Paulides attributes mysterious, unspecified causes to these disappearances, while data analysis suggests that these disappearances are not statistically mysterious or unexpected.
“According to Paulides, his work on this subject began when he was doing research in a national park and an off-duty park ranger found him and expressed concern about the questionable nature of some of the missing person cases which occurred in the parks.” – Wikipedia
