Based on real life bank robber Brenden Abbott, AKA "The Post Card Bandit" & his apprentice Brendan Berichon.
An experienced stuntman himself, Nash Edgerton did the majority of his own stunt driving for the heist chase sequence.
A big fan of Michael Mann's work, director Julius Avery had Brenton Thwaites' character carry around a collage which featured an image of James Caan from Le solitaire (1981).
As he was playing a character moving in criminal circles, Brenton Thwaites got in contact with a former prisoner and spent time with him to learn more about the lifestyle. He copied a lot of the character traits and mannerisms from his contact who had been convicted at a very young age and had spent most of his adult life in prison.