Sherlock Holmes: The young lady is taking her mother to Scotland for burial.
Inspector Lestrade: In a coffin?
Sherlock Holmes: That is the customary method, I believe.
Prof. William Kilbane: You come pounding on this door again and I'll have the law on you.
Inspector Lestrade: I am the law.
Prof. William Kilbane: Then stop barging in and out of my room like a chambermaid.
Dr. John H. Watson: My name's Watson - Dr. Watson.
Prof. William Kilbane: Oh? To what am I indebted for this intrusion?
Lady Margaret Carstairs: I shall report you both to Scotland Yard.
Inspector Lestrade: ...But I am Scotland Yard.
Sherlock Holmes: Thank you, Lady Margaret. We'll be as unobtrusive as possible.
Lady Margaret Carstairs: That would be a novelty from a policeman.