Danish investigative journalist, filmmaker and TV host, Mads Brügger is infamous for his ironic and incisive trawling of the dirtiest of the tainted and the corrupt. In 2011, his documentary The Ambassador was about the trading of diplomatic titles in Africa. Brügger impersonated a Liberian ambassador by purchasing his new identity on the black market. Now he is back in Africa with guns blazing on the trail of the plotters and murderers of UN Secretary Dag Hammarskjöld in 1961. The dirt he uncovers should be creating a stench from London to South Africa via Belgium. In January this year Brügger reported on the Hammarskjöld assassination and the skein of intrigue among the highest organs of government in The Guardian in London. A film of great importance. Miss it at your peril.