I'm sorry, it's not possible.
3 seconds sound clip from the Horror of Dracula (1958) movie soundboard.
You can hear this line at 00:13:54.208 in the DVD version of the movie.
Quote context
[...]
- At last I have met Count Dracula.
- He accepts me as a man who has agreed to work among his books, as I intended.
- Mr Harker, you will help me?
- But tell me why is Count Dracula keeping you prisoner?
- But if I am to help you, I must know.
- I'm sorry, it's not possible.
- You make it very difficult for me.
- After all, I am a guest here. If I'm to help you I must have a reason.
- You can have no idea what an evil man he is! Or what terrible things he does!
[...]