chunk: While Marian is ill, Laura is tricked into travelling to London, and the plan is accomplished. Anne Catherick succumbs to her illness and is buried as Laura, while Laura is drugged and conveyed to the asylum as Anne. When Marian visits the asylum, hoping to learn something from Anne, she finds Laura, who is dismissed as a deluded Anne when she claims to be Laura. Marian bribes the nurse, and Laura escapes. Walter has meanwhile returned from Honduras, and the three live incognito in London, formulating plans to restore Laura's identity. During his research, Walter discovers Glyde's secret; he was illegitimate, and therefore not entitled to inherit his title or property. In the belief that Walter has discovered or will discover his secret, Glyde attempts to incinerate the incriminating documents; but perishes in the flames. From Anne's mother (Jane Catherick), Walter discovers that Anne never knew what Glyde's secret was. She had only know that there was a secret around Glyde and had