Terence Stamp stars as the mysterious stranger, perhaps an angel, perhaps a devil, who, one by one, seduces the members of a wealthy Milanese family, precipitating an existential crisis in each of their lives. Unfolding nearly wordlessly in a procession of sacred and profane images, this tantalizing metaphysical riddle, blocked from an exhibition by the Catholic Church for degeneracy, is at once a blistering Marxist treatise on sex, religion, and art and a primal scream into the void.