Such is the dominance of superhero cinema in twenty-first century Hollywood – over a decade on from Iron Man and we’re clearly beyond phase territory – the genre has begun to spawn. Now, alongside bravura three act, computer generated blockbusters, we have black and white westerns, space operas and coming of age school flicks all under the bruce banner. Joining these offshoot quasi-comic book features, Brightburn subverts expectations with influence from the dark bite of horror. A smart move, given that genres parallel mainstream resurgence in recent years. In execution, Brightburn never quite achieves the potential of this promised fusion but does enough to just about equal the sum of its parts.