I'm sorry, but your word is not enough. Too many things need fuller explanation before I can be satisfied that what you say is true.

12 seconds sound clip from the The Pit and the Pendulum (1961) movie soundboard.

You can hear this line at 00:10:53 in the Blu-ray version of the movie.

Quote context

[...]

- I trust that you will be comfortable here.

- Is this you?

- No. No, that is my father, Sebastian Medina.

- Sebastian Medina, yes. The resemblance is remarkable.

- Yes.

- And the other is my Uncle Bartolome.

- I am aware, painfully aware of your distrust regarding Elizabeth's death. Her death was... and is anguish to me. I beg of you, do not add to it...

- I'm sorry, but your word is not enough. Too many things need fuller explanation before I can be satisfied that what you say is true.

- Fuller explanation? Yes. Come with me. Please come.

- The atmosphere is heavy in here.

- Why have you brought me here?

- It is her room, sir. I've had it kept exactly as she left it.

[...]