- Good night, Mr Harker.
- Good night, sir.

3 seconds sound clip from the Horror of Dracula (1958) movie soundboard.

You can hear this line at 00:09:19.600 in the DVD version of the movie.

Quote context

[...]

- I consider myself fortunate to have found such a distinguished scholar to act as my librarian.

- I like quiet and seclusion. This house, I think, offers that.

- Then we are both satisfied. An admirable arrangement.

- Oh, there is just one more thing, Mr Harker.

- I have to go out and I will not be back until after sundown tomorrow. Until then, please look upon this house as your own.

- Good night, Mr Harker.

- Good night, sir.

(KNOCKING ON DOOR)

- As I shall be away for so long, I think it's better that you should have the key of the library, Mr Harker.

- Thank you.

- You will find the library to the left of the hall.

- May I?

- Yes, certainly.

[...]