Hoult told reporters how he and Law, adversaries in the film, did not speak or interact with each other for the first four weeks of filming in an attempt to distance themselves from each other.
Director Kurzel also tasked Nicholas Hoult, who followed Jude Law around for a day without his fellow actor knowing.
This is the second time Justin Kurzel and Nicholas Hoult have worked together. The first time was on True History of the Kelly Gang (2019).