Josh O'Connor in 'The Mastermind.' Mastermind Movie Inc Share on Facebook Share on X Share to Flipboard Send an Email Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Print the Article Post a Comment Mubi has released the official trailer for Kelly Reichardt's new film, The Mastermind, focusing on Josh O'Connor's character JB Mooney's preparations for an art heist. The movie is set in Massachusetts in the 1970s, where O'Connor's unemployed carpenter turned amateur art thief plans his first major crime.