It’s been many years since we’ve heard from Danish enfant terrible Mads Brügger, last seen smuggling blood diamonds in The Ambassador (T/F 2012) and infiltrating North Korea in The Red Chapel (T/F 2010). This muckraking journalist is back with his most ambitious, sophisticated and problematic film yet. In 1961, U.N. Secretary-General Dag Hammarskjöld was killed in a plane crash while traveling to a ceasefire negotiation in the Congo. The death has since been a source of conspiracy theories, with many believing he was murdered but no consensus on the murderer or their motive. Aided by private investigator Göran Björkdahl, a dogged and perhaps irrationally persistent Brügger attempts to find an answer. What begins as an engrossing if somewhat trivial murder mystery explodes into something unfathomably chilling. (CB)