This way I can tell if you're lying in a few minutes.
2 seconds sound clip from the The Big Combo (1955) movie soundboard.
You can hear this line at 00:20:37.953 in the Blu-ray version of the movie.
Quote context
[...]
- I got a right to make a phone call.
- Mr. Brown's a little busy right now in a conference with Mr. Diamond.
- You know, legally I don't have to submit to this test.
- I know, we appreciate your cooperation, Mr. Brown.
- This way I can tell if you're lying in a few minutes.
- Go ahead, lad. Let's get it over with.
- Picking me up for peddling without a license -
- I prefer it to be suspicion of murder, but... we had none today.
- I would have been happy to accommodate you, a police lieutenant.
[...]