All I have to do is tap just a little harder.

8 seconds sound clip from the Three Skeleton Key (Escape) classic radio play.

You can hear this line at 00:22:35 in the radio play.

Quote context

[...]

- I was almost dozing from fatigue when I saw a sight that brought me to, fast.

- Ha-ha-ha! Would you like to come in, my beauties? Would you? I hold the powers of life and death. And I can let you in, you know.

- Auguste was standing by the glass and in one hand he held a wrench.

- He was tapping the glass gently. Not quite hard enough to break it.

- I eased myself to my feet and slowly, very slowly, tiptoed toward him.

- All I have to do is tap just a little harder.

- I found a coil of wire in the tool kit and I trussed him up. Fastened him to a stanchion in the center of the room.

- Louis was of no help. He lay on his side looking at his bloody hand, weak and sick as a baby.

- So there I was, a lunatic and a coward for company, and all about, watching our little drama, the rats.

- The day dragged by. The supply boat wasn't due for another twelve days. I don't know what they could have done if they had come.

[...]