Conspiracy theories are understandably tempting. They attempt to provide a narrative to our world, often to the horrors we cannot easily explain. But what’s the difference between a conspiracy theory and a mystery? Does the truth dwell in conspiracy until there’s enough evidence to support it? And how much evidence is needed to push a story from fiction to fact? Like in his 2011 documentary The Ambassador, writer/director Mads Brügger is fascinated by the concept of truth, particularly with how it relates to social issues. While his new movie, Cold Case Hammarskjöld, begins as a …