Caleb Landry Jones is really good as the eponymous character in this well told story of the build up to the worst gun-crime atrocity in Australian history. As the title may suggest, this young man has some mental health issues that his peers have enjoyed ridiculing over the years and that his parents Judy Davis and Anthony LaPaglia have spent some time trying to manage - and that's not been an easy task. He wants to learn to surf, but to buy a board he needs cash so starts his own lawn-cutting enterprise. He asks an eccentric, but wealthy, local woman "Helen" (Essie Davis) if he can cut her…