What I am about to tell you, no one in this world except Nicholas and myself knows. That is, I thought that no one else knew.
11 seconds sound clip from the The Pit and the Pendulum (1961) movie soundboard.
You can hear this line at 00:35:31 in the Blu-ray version of the movie.
Quote context
[...]
- Doctor, will you stay, please?
- Yes, of course, my dear. Until the morning, at any rate.
- It is.
- But how?
- Let us not talk here. May we use your room, sir?
- What?
- I hasten to assure you both that such is not the case.
- Elizabeth was quite dead. I would stake my reputation on that fact.
[...]