The director’s attention to small, revealing behavior—which he typically used to generate suspense—creates a potent eroticism here . . . Yet Léon Morin is about more than unspoken desire—its ultimate concern is the unseen force of religious faith, in which the characters find solace during the Nazi occupation. Conceivably the most probing film about Catholicism ever made by a Jewish director, Léon Morin deepens the theme of tacit devotion that runs through all of Melville’s filmography.