Nitram is the Martin Bryant film which sent shivers down everyone’s spine at the mere prospect. Justin Kurzel’s film about the perpetrator of the Port Arthur massacre in 1996 – Nitram is Martin backwards – has been in cinemas for a few weeks now but last week it started streaming on Stan and it should command the largest possible audience: not only is it the most significant piece of Australian cinema to make it to the streamers but it will hold its own with all-comers.