For over a decade, former police investigator David Paulides has chronicled a chilling phenomenon: the unexplained disappearance of thousands of people within North America's national parks and wildlands. Building on the global success of the Missing 411 series, this latest investigative documentary delves into the disturbing patterns-inexplicable weather events, failed tracking dogs, and geographical clusters-that defy conventional logic and official explanations. As Paulides pushes against systemic resistance and a multi-million-dollar price tag for public records, Missing 411: National Parks utilizes new federal filming laws to go where cameras were previously barred. Featuring unprecedented whistleblower testimony and firsthand accounts, the film confronts a haunting question: why does the National Park Service claim it has no master list of the missing, and what is truly happening to those who vanish without a trace on public land?