A filmmaker and a crooked lawyer shattered Denmark's self-image

Same filmmaker exposed US, UK, Apartheid collaboration and involvement in the spread of HIV in Africa, and the assassination of the SecGen of the UN, Dags Hammerskjold

For Hammarskjold, the various documents that have been released or otherwise leaked suggest he could have been killed by the US, France, the USSR, or mercenaries hired by African mining interests. Or some combination of the above. As far as I can tell there is no definitive proof of who exactly was behind it, only that a lot of powerful people wanted him gone.

Does the filmmaker have access to some sort of exclusive information that the rest of the world doesn't? Or, like most of these sorts of filmmakers, is he drawing conclusions beyond what can be conclusively reached with the availabile evidence?