Sherlock Holmes: Thank you, Lady Margaret. We'll be as unobtrusive as possible.
Lady Margaret Carstairs: That would be a novelty from a policeman.

- Mary Forbes (as Lady Margaret Carstairs) in Terror by Night (1946)

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.

- Basil Rathbone (as Sherlock Holmes) in Terror by Night (1946)

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.

- Nigel Bruce (as Dr. John H. Watson) in Terror by Night (1946)

Lady Margaret Carstairs: I shall report you both to Scotland Yard.
Inspector Lestrade: ...But I *am* Scotland Yard.

- Dennis Hoey (as Inspector Lestrade) in Terror by Night (1946)

[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.

- Nigel Bruce (as Dr. John H. Watson) in Terror by Night (1946)

[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.

- Basil Rathbone (as Sherlock Holmes) in Terror by Night (1946)