In the heart of the Florida wilderness, a mysterious hiker is discovered dead, igniting a search for answers that captivates the nation. Authorities release a sketch of the unidentified man, triggering a wave of reports from hikers who claim to have crossed paths with him. However, there's one puzzling twist—none of them know his name. What begins as a haunting mystery soon evolves into a two-year journey fueled by the tireless efforts of internet detectives and the latest forensic science. As the online community unravels the clues surrounding the hiker's identity, they uncover secrets that lead to shocking revelations. "They Called Him Mostly Harmless" is not just a true-crime tale; it's a gripping exploration of human connections and the lengths we go to for truth. With each new lead, the story delves deeper into the heart of an enigma that challenges our understanding of identity, community, and the power of collective investigation. Will the truth finally emerge, or will it remain shrouded in mystery forever? Join the hunt to uncover the man behind the sketch in this thrilling cinematic experience.