Webthe thin blue line tells the story of randall dale adams, a man who was wrongly convicted of killing dallas police officer robert wood in 1976. Webthe thin blue line is a groundbreaking documentary directed by the talented and renowned filmmaker errol morris. Released in 1988, this gripping film. Webin the opening sequence of the thin blue line, errol morris enhances his quest for the truth with innovative, and controversial, style. The thin blue line (1988) is more. To the thin blue line: Webthe following interview with filmmaker joshua oppenheimer about the thin blue line was conducted in december 2014. Webthe 1988 movie, “the thin blue line” argued that a man was wrongly convicted for murder by a corrupt justice system in texas. When officers come forward.