Forensic Files Season 2 Episode 3 Killer Fog ( Air Date 1997-10-16 ) Genre Crime, Documentary category. Overview "It was the single, most deadly automobile accident in American history. Almost a hundred vehicles were involved, twelve people died, and more than fifty people were injured. It happened along a three mile stretch of highway long known for dense, thick fog. Investigators set out to determine if the fog was a natural phenomenon, or the result of something else.".