Standing on the roof, Marian overhears Glyde and Fosco's plan to seize Laura's inheritance, but she is soaked by rainfall and catches a fever, requiring bed-rest. An exhausted Laura sits with her, but on waking is told Marian has gone to London with Fosco. However she is unable to find her half-sister, whilst the recovering Marian is given devastating news. She determines to avenge Laura, and on Walter's return to England, they visit scrivener Erasmus Nash with their evidence before visiting the asylum where they are told Anne is being held.
—don @ minifie-1