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

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

You can hear this line at 00:22:52.436 in the radio play.

Quote context

[...]

- Excuse me, sir, to the time when I found myself living in London with my dear daughter here.

- I have no remembrance. No. No remembrance.

- Next witness! Next witness! Next witness! Next witness!

- Now things began to look black for the prisoner.

- The prosecution held that previous to that Friday night in November 5 years ago, Charles Darnay had visited a dockyard town on the south coast of England, and there collected information which he later delivered to the French authorities in Calais.

- 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.

[...]