Vanessa Polk, having spotted him for a crook, persuades Chesney to help her steal the painting, but he recognises Halliday, newly arrived at the castle, as the attorney who defended him after an earlier crime went wrong. He plans to leave to avoid being unmasked and return by night for the painting, but seeing Halliday at the top of the stairs, pushes him down. Halliday falls, taking Dunstable with him, and while he angers the Duke he endears himself to Linda, who finds herself kissing his face as he lies prone in the hallway. Linda, now firmly in favour of Halliday, reveals she cannot marry without Dunstable's consent, which he refuses after the stairs incident, and also having recalled Halliday's father, who he never got on with.