I'm going to put a thin layer of loose earth along the top of the wall. The slightest touch will disturb it, and we've got him trapped.
8 seconds sound clip from the The Invisible Man (1933) movie soundboard.
You can hear this line at 01:00:10.783 in the Blu-ray version of the movie.
Quote context
[...]
- You see, it covers a fairly wide range.
- I've got 20 of these guns and a good man to each.
- One splash of this on his skin, and we've got something to follow at last.
- Why not paint the top of the wall?
- They think they're very clever.
- All right, take him straight inside.
- Twenty minutes to 10:00. Keep your eyes open now, boys.
[...]