Our father's smiling affability as he described the workings of these hellish instruments turned Nicholas' blood cold.

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

You can hear this line at 00:28:09 in the Blu-ray version of the movie.

Quote context

[...]

- He had to see the chamber.

- Suddenly there were footsteps. It was our father.

- With him were our mother and our Uncle Bartolome, who was our father's brother.

- At first it appeared that for some inexplicable reason, our father was actually conducting them on a tour of his ghastly chamber.

- Nicholas could see that both our mother and our uncle were uneasy, frightened.

- Our father's smiling affability as he described the workings of these hellish instruments turned Nicholas' blood cold.

- He watched them with a mounting sense of premonition.

- Something was wrong, most terribly wrong. Even he, no more than 10 years of age, could sense it like a darkening vapor in the air.

- There was no reason for our mother and our uncle to have been there.

- As he struck, he kept on screaming at his brother one word over and over.

[...]