When Marian finds Walter, he joins her in her quest to learn the secret of Anne Catherick and avenge Laura's death. Marian believes that Anne's location is in a document that she witnessed Count Fosco sign the night she eavesdropped. Meanwhile, Glyde is happily betting the money that he has not yet received, which infuriates Fosco and leads to a split in their friendship. Marian and Walter are ready to leave for their visit to Count Fosco's. Marian is dressed specifically with the intent to use her feminine wiles against Fosco, which makes Walter suddenly realize his true feelings for her. Fosco, pleased with his part in the manipulation of everyone, gloats to himself and his pet mice.