Although a sequel to The Da Vinci Code (2006) and also directed by Ron Howard and written in part by Dan Brown, Angels & Demons (2009) stands on its own as a narrative and thus as a film in its own right. Although the relationship between science and religion undergirds the film’s dramatic tension, the more fundamental leitmotif running throughout the film is the sheer ambiguity involved in whether a given character is more like an angel or a demon. An implication is that we mere mortals should not presume to judge the religiosity of other mortals; that’s God’s job, for we so lack the divine attributes of omniscience and omnipotence.
The full essay is at "Angels & Demons."