The real treasure was the subterranean maze we force young missionaries through to force our anti-religious worldview upon them all along.
Sophie Thatcher and Chloe East are fantastic in this film--but the real star is an electrically horrifying Hugh Grant. It wouldn't work nearly as well without his decades of 'charming leading man' goodwill, and he uses that goodwill as a cudgel.
Mr. Reed is a broken man who weaponizes his theological disillusionment to torment religious women. His unconscious misogyny is one of many inconsistencies in both his personage and ideology that Grant lets peep through during his monologues.