- 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.
- [Sherlock watches from the train corridor as Prof. Kilbane throws Dr. Watson from his compartment]
- Sherlock Holmes: Did you discover anything, Watson?
- Dr. John H. Watson: Yes. He's a very suspicious character. He tried to put me off the scent.
- Sherlock Holmes: From the little I heard, he seemed reasonably successful.
- Lady Margaret Carstairs: I shall report you both to Scotland Yard.
- Inspector Lestrade: ...But I *am* Scotland Yard.
- Lady Margaret Carstairs: [presenting her diamond] My husband gave it to me on our fifth wedding anniversary.
- Sherlock Holmes: 423 carats, isn't it?
- Lady Margaret Carstairs: The original diamond was over 700 carats.
- Sherlock Holmes: Really?
- Lady Margaret Carstairs: [to her son] Your father had it cut. Less ostentatious.
- Dr. John H. Watson: Less ostentatious? It's as big as a duck's egg.
- Sherlock Holmes: Thank you, Lady Margaret. We'll be as unobtrusive as possible.
- Lady Margaret Carstairs: That would be a novelty from a policeman.
- Dr. John H. Watson: My name's Watson - Dr. Watson.
- Prof. William Kilbane: Oh? To what am I indebted for this intrusion?
- [At Sherlock's suggestion, Watson interrogates a suspect on his own, but the suspect is suspicious of Watson's official standing and turns the inquiry around]
- Prof. William Kilbane: Are you a policeman?
- Dr. John H. Watson: No.
- Prof. William Kilbane: Then, by what right, do you force your way into my compartment?
- Dr. John H. Watson: Well, I...
- Prof. William Kilbane: What are YOU doing on this train? Where are YOU going?
- Dr. John H. Watson: I'm not going anywhere.
- Sherlock Holmes: The Inspector's going to Scotland to fish for salmon!
- Dr. John H. Watson: [to Lestrade] Oh really? The season doesn't start for another month, but you wouldn't know that, would you?
- Inspector Lestrade: 'Oo says I'm gonna fish fer salmon?
- Dr. John H. Watson: 'Oo? 'Im!
- Dr. John H. Watson: Try some of this curry. It's excellent.
- Sherlock Holmes: [ignoring him and speaking to the waiter] Steak and kidney pudding, please.
- Major Duncan-Bleek: Of course, the Bengal curry doesn't compare with that of Madras. It's the quality of the mutton that makes the difference, don't you think?
- Dr. John H. Watson: The, uh... the meat's unimportant. It's the spices that make the difference. Don't you agree with me Holmes?
- Sherlock Holmes: [he hasn't been paying attention to the discussion] What?
- Dr. John H. Watson: I say, we-we-we were discussing curry.
- Sherlock Holmes: Oh, yes, curry! Horrible stuff!
- Dr. John H. Watson: Oh, really? One man's meat is another man's poison.
- 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.