Maidens sing a delicate, sentimental song ("On the blue Vistula") to entertain Marina as her chambermaid dresses her hair. Marina declares her preference for heroic songs of chivalry. She dismisses everyone. Alone, she sings of her boredom ("How tediously and sluggishly"), of Dmitriy, and of her thirst for adventure, power, and glory. The Jesuit Rangoni enters, bemoans the wretched state of the church, attempts to obtain Marina's promise that when she becomes Tsaritsa she will convert the heretics of Moscow (Russian Orthodox Church) to the true faith (Roman Catholicism), and encourages her to bewitch the Pretender. When Marina wonders why she should do this, Rangoni angrily insists that she stop short of nothing, including sacrificing her honor, to obey the dictates of the church. Marina expresses contempt of his hypocritical insinuations and demands he leave. As Rangoni ominously tells her she is in the thrall of infernal forces, Marina collapses in dread. Rangoni demands her obedience.