Writer/director David Michôd said he often relented to Ben Mendelsohn's request for additional takes of his scenes because his respect for the actor's 'wild, unpredictable' contributions. In fact, the very first scene featuring Mendolsohn's 'Pope' character took about 15 takes.
This film represents the third of three Australian Film Institute (AFI) acting awards won for a feature film by Australian actress Jacki Weaver. Weaver's first was Best Actress (as the Hoyts Prize for Best Performance) in Stork (1971) and the second was a tie for Best Supporting Actress, with Melissa Jaffer, both for Caddie (1976).
The film is loosely based on the Melbourne crime scene in the 1980s, and the Pettingills crime family. Also, the random revenge murder of two patrolmen recreates the 1988 Walsh Street police shootings.
In an interview on the radio program "Fresh Air," Jacki Weaver explained that her interpretation of her character included the unspoken fact that all of Janine's children had been fathered by different men, most likely criminals themselves.
Still a high school student, James Frecheville plays a character the same age as himself, though he was much bigger and more adult-looking than the character originally imagined by writer/director 'David Michôd. But Michôd very quickly realized that Frecheville's alpha-male look brought an extra credibility as well as tension to the drama.
David Michôd explained that among the unplanned, unscripted elements he felt compelled to add to the film's opening moments for clarity, after shooting was complete, were the stills montage of bank robberies and the voiceover by protagonist Josh/J.
David Michôd says his intention was to create a crime drama that was "sprawling and grand... bigger, darker and meaner" - a film that quickly departed from the bleakness of its initial drug-addicted, working-class milieu.