Madness and Insanity

Lady Audley's mental state is a central theme, with her actions attributed to hereditary insanity, and the novel explores the thin line between sanity and madness as a justification for her crimes.

George's dark presentiment of a 'black, pitiless tide' closing in on him hints at psychological distress bordering on obsession.

Robert's troubled dreams and his growing obsession with the mystery hint at the psychological strain and potential madness that pervades the narrative.

Robert fears Lady Audley's potential madness, and she accuses him of monomania, blurring the line between sanity and obsession.

Lady Audley questions her own sanity ('You are mad... I know what madness is') and contemplates murder, blurring the line between rational fear and insanity.