I'm afraid there's some mistake.
2 seconds sound clip from the The Curse of Frankenstein movie soundboard.
You can hear this line at 00:21:22.491 in the Blu-ray version of the movie.
Quote context
[...]
- Will he be in time for dinner, sir?
- I don't know, he didn't say.
- Good evening, Baron Frankenstein is expecting me. May I come in?
- I shall need some assistance with my luggage.
- Luggage? Yes, I'm coming to stay.
- Well, I'm sorry, miss, but the Baron told no one of this.
- But he must have done. I wrote him some weeks ago.
- Victor, how happy I am to see you.
- I'm afraid there's some mistake.
- Mistake? Didn't you get my letter?
- I'm not Victor, I'm Paul Krempe.
- Oh, Paul Krempe. I'm so sorry.
- I haven't seen Victor for so long.
- Now that you know who I am why not tell me who you are?
[...]