A gentleman who had been sitting off by himself all this time, staring up at the ceiling of the court, suddenly came to life.

8 seconds sound clip from the A Tale of Two Cities (1938) classic radio drama series episode.

You can hear this line at 00:23:26.039 in the radio play.

Quote context

[...]

- In proof of this, the star witness, who had every appearance of being himself a paid spy, now took the stand...

- And identified Charles Darnay as having been at the precise time required in the coffee room of a hotel in that dockyard town waiting for another person.

- On this point, counsel for the prisoner tried in vain to shake him.

- And that is the only time you ever saw this prisoner?

- Yes, your honor.

- You never saw him before or since?

- No, your honor. No.

- Now, a curious thing happened.

- A gentleman who had been sitting off by himself all this time, staring up at the ceiling of the court, suddenly came to life.

- Removed his wig, wrote a word or two on a little piece of paper, and tossed it to the prisoner's counsel, who opened it, and then looked with great attention and curiosity at the prisoner.

- You say again you are quite sure that it was the prisoner?

- Oh, quite sure, your honor.

- Did you ever see anybody very like the prisoner?

- Oh, no, your honor.

- Do you think there could be anybody so like the prisoner that you could be mistaken?

- Oh, no, your honor.

[...]