Before making his revolutionary documentary film The Thin Blue Line, filmmaker Errol Morris worked as a private detective. His detective skills came in handy not only in making the film but in actually solving the crime at the heart of the story and freeing an innocent man from a prison life sentence.The Thin Blue Line (1988) not only exposed a miscarriage of justice and freed an innocent man from prison, but created a new genre of movies and forever changed the way Americans view their own justice system. Tags: crime · Errol Morris · movies · murder · video