Jessica Kiang Justin Kurzel’s exceptionally disturbing, horribly plausible “Nitram” opens with an excerpt from a 1979 Australian news report on firework accidents. A boy of about 12 is being interviewed from his Hobart hospital bed, and when the posh, compassionate voice of the presenter asks if the injuries he sustained will discourage him from playing with fireworks in future, he smiles a strange, sly smile, and says no.